Ubuntu update for linux
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2021-27363 CVE-2021-27364 CVE-2021-27365 |
| CWE-ID | CWE-200 CWE-264 CWE-119 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system linux-image-4.4.0-1088-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1110-azure (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1148-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1067-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oracle (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-snapdragon (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gcp-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws-lts-18.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-139-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-139-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-139-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1098-snapdragon (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1096-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1095-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1087-kvm (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.15.0-1081-raspi2 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-virtual-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-powerpc64-smp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-powerpc64-emb (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-powerpc-smp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-powerpc-e500mc (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-oem (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-lowlatency-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gke (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-lpae-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-generic-hwe-16.04 (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-gcp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-azure-edge (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-aws-hwe (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-powerpc64-smp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-powerpc64-emb (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-powerpc-smp (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-powerpc-e500mc (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-lowlatency (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-generic-lpae (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-206-generic (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1152-snapdragon (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1124-aws (Ubuntu package) Operating systems & Components / Operating system package or component linux-image-4.4.0-1090-kvm (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) Information disclosure
EUVDB-ID: #VU51453
Risk: Low
CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-27363
CWE-ID:
CWE-200 - Exposure of sensitive information to an unauthorized actor
Exploit availability: No
DescriptionThe vulnerability allows a local user to gain access to potentially sensitive information.
The vulnerability exists due to the show_transport_handle() shows iSCSI transport handle to non-root users. A local user can gain unauthorized access to sensitive information and use it along with another vulnerability, such as #VU51452, to escalate privileges on the system.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 18.04
linux-image-4.4.0-1088-aws (Ubuntu package): before 4.4.0-1088.92
linux-image-aws (Ubuntu package): before 4.4.0.1088.85
linux-image-azure (Ubuntu package): before 4.15.0.1110.83
linux-image-4.15.0-1110-azure (Ubuntu package): before 4.15.0-1110.122~14.04.1
linux-image-raspi2 (Ubuntu package): before 4.4.0.1148.148
linux-image-4.4.0-1148-raspi2 (Ubuntu package): before 4.4.0-1148.158
linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1067.77
linux-image-4.15.0-1067-oracle (Ubuntu package): before 4.15.0-1067.75~16.04.1
linux-image-oracle (Ubuntu package): before 4.15.0.1067.55
linux-image-virtual (Ubuntu package): before 4.4.0.206.212
linux-image-snapdragon (Ubuntu package): before 4.4.0.1152.144
linux-image-lowlatency (Ubuntu package): before 4.4.0.206.212
linux-image-kvm (Ubuntu package): before 4.4.0.1090.88
linux-image-generic-lpae (Ubuntu package): before 4.4.0.206.212
linux-image-generic (Ubuntu package): before 4.4.0.206.212
linux-image-gcp-lts-18.04 (Ubuntu package): before 4.15.0.1095.113
linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1110.83
linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1096.99
linux-image-4.15.0-139-lowlatency (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic-lpae (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-1098-snapdragon (Ubuntu package): before 4.15.0-1098.107
linux-image-4.15.0-1096-aws (Ubuntu package): before 4.15.0-1096.103~16.04.1
linux-image-4.15.0-1095-gcp (Ubuntu package): before 4.15.0-1095.108~16.04.1
linux-image-4.15.0-1087-kvm (Ubuntu package): before 4.15.0-1087.89
linux-image-4.15.0-1081-raspi2 (Ubuntu package): before 4.15.0-1081.86
linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-powerpc64-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc64-emb (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-e500mc (Ubuntu package): before 4.4.0.206.212
linux-image-oem (Ubuntu package): before 4.15.0.139.134
linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gke (Ubuntu package): before 4.15.0.1095.96
linux-image-generic-lpae-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gcp (Ubuntu package): before 4.15.0.1095.96
linux-image-azure-edge (Ubuntu package): before 4.15.0.1110.101
linux-image-aws-hwe (Ubuntu package): before 4.15.0.1096.89
linux-image-4.4.0-206-powerpc64-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc64-emb (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-e500mc (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-lowlatency (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic-lpae (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-1152-snapdragon (Ubuntu package): before 4.4.0-1152.162
linux-image-4.4.0-1124-aws (Ubuntu package): before 4.4.0-1124.138
linux-image-4.4.0-1090-kvm (Ubuntu package): before 4.4.0-1090.99
CPE2.3- cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1088-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1110-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1148-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1067-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1098-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1096-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1095-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1087-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1081-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oem_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gke_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-edge_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-hwe_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1152-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1124-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1090-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-4883-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU51452
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-27364
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to iscsi_if_recv_msg() allows non-root users to connect and send commands to the Linux kernel. A local user can escalate privileges on the system.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 18.04
linux-image-4.4.0-1088-aws (Ubuntu package): before 4.4.0-1088.92
linux-image-aws (Ubuntu package): before 4.4.0.1088.85
linux-image-azure (Ubuntu package): before 4.15.0.1110.83
linux-image-4.15.0-1110-azure (Ubuntu package): before 4.15.0-1110.122~14.04.1
linux-image-raspi2 (Ubuntu package): before 4.4.0.1148.148
linux-image-4.4.0-1148-raspi2 (Ubuntu package): before 4.4.0-1148.158
linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1067.77
linux-image-4.15.0-1067-oracle (Ubuntu package): before 4.15.0-1067.75~16.04.1
linux-image-oracle (Ubuntu package): before 4.15.0.1067.55
linux-image-virtual (Ubuntu package): before 4.4.0.206.212
linux-image-snapdragon (Ubuntu package): before 4.4.0.1152.144
linux-image-lowlatency (Ubuntu package): before 4.4.0.206.212
linux-image-kvm (Ubuntu package): before 4.4.0.1090.88
linux-image-generic-lpae (Ubuntu package): before 4.4.0.206.212
linux-image-generic (Ubuntu package): before 4.4.0.206.212
linux-image-gcp-lts-18.04 (Ubuntu package): before 4.15.0.1095.113
linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1110.83
linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1096.99
linux-image-4.15.0-139-lowlatency (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic-lpae (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-1098-snapdragon (Ubuntu package): before 4.15.0-1098.107
linux-image-4.15.0-1096-aws (Ubuntu package): before 4.15.0-1096.103~16.04.1
linux-image-4.15.0-1095-gcp (Ubuntu package): before 4.15.0-1095.108~16.04.1
linux-image-4.15.0-1087-kvm (Ubuntu package): before 4.15.0-1087.89
linux-image-4.15.0-1081-raspi2 (Ubuntu package): before 4.15.0-1081.86
linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-powerpc64-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc64-emb (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-e500mc (Ubuntu package): before 4.4.0.206.212
linux-image-oem (Ubuntu package): before 4.15.0.139.134
linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gke (Ubuntu package): before 4.15.0.1095.96
linux-image-generic-lpae-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gcp (Ubuntu package): before 4.15.0.1095.96
linux-image-azure-edge (Ubuntu package): before 4.15.0.1110.101
linux-image-aws-hwe (Ubuntu package): before 4.15.0.1096.89
linux-image-4.4.0-206-powerpc64-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc64-emb (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-e500mc (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-lowlatency (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic-lpae (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-1152-snapdragon (Ubuntu package): before 4.4.0-1152.162
linux-image-4.4.0-1124-aws (Ubuntu package): before 4.4.0-1124.138
linux-image-4.4.0-1090-kvm (Ubuntu package): before 4.4.0-1090.99
CPE2.3- cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1088-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1110-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1148-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1067-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1098-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1096-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1095-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1087-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1081-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oem_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gke_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-edge_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-hwe_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1152-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1124-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1090-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-4883-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Buffer overflow
EUVDB-ID: #VU51451
Risk: Low
CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2021-27365
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing Netlink messages in Linux kernel through 5.11.3, as certain iSCSI data structures do not have appropriate length constraints or checks, and can exceed the PAGE_SIZE value. A local unprivileged user can send a Netlink message that is associated with iSCSI, and has a length up to the maximum length of a Netlink message, trigger memory corruption and execute arbitrary code on the system with elevated privileges.
Update the affected package linux to the latest version.
Vulnerable software versionsUbuntu: 14.04 - 18.04
linux-image-4.4.0-1088-aws (Ubuntu package): before 4.4.0-1088.92
linux-image-aws (Ubuntu package): before 4.4.0.1088.85
linux-image-azure (Ubuntu package): before 4.15.0.1110.83
linux-image-4.15.0-1110-azure (Ubuntu package): before 4.15.0-1110.122~14.04.1
linux-image-raspi2 (Ubuntu package): before 4.4.0.1148.148
linux-image-4.4.0-1148-raspi2 (Ubuntu package): before 4.4.0-1148.158
linux-image-oracle-lts-18.04 (Ubuntu package): before 4.15.0.1067.77
linux-image-4.15.0-1067-oracle (Ubuntu package): before 4.15.0-1067.75~16.04.1
linux-image-oracle (Ubuntu package): before 4.15.0.1067.55
linux-image-virtual (Ubuntu package): before 4.4.0.206.212
linux-image-snapdragon (Ubuntu package): before 4.4.0.1152.144
linux-image-lowlatency (Ubuntu package): before 4.4.0.206.212
linux-image-kvm (Ubuntu package): before 4.4.0.1090.88
linux-image-generic-lpae (Ubuntu package): before 4.4.0.206.212
linux-image-generic (Ubuntu package): before 4.4.0.206.212
linux-image-gcp-lts-18.04 (Ubuntu package): before 4.15.0.1095.113
linux-image-azure-lts-18.04 (Ubuntu package): before 4.15.0.1110.83
linux-image-aws-lts-18.04 (Ubuntu package): before 4.15.0.1096.99
linux-image-4.15.0-139-lowlatency (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic-lpae (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-139-generic (Ubuntu package): before 4.15.0-139.143~16.04.1
linux-image-4.15.0-1098-snapdragon (Ubuntu package): before 4.15.0-1098.107
linux-image-4.15.0-1096-aws (Ubuntu package): before 4.15.0-1096.103~16.04.1
linux-image-4.15.0-1095-gcp (Ubuntu package): before 4.15.0-1095.108~16.04.1
linux-image-4.15.0-1087-kvm (Ubuntu package): before 4.15.0-1087.89
linux-image-4.15.0-1081-raspi2 (Ubuntu package): before 4.15.0-1081.86
linux-image-virtual-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-powerpc64-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc64-emb (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-smp (Ubuntu package): before 4.4.0.206.212
linux-image-powerpc-e500mc (Ubuntu package): before 4.4.0.206.212
linux-image-oem (Ubuntu package): before 4.15.0.139.134
linux-image-lowlatency-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gke (Ubuntu package): before 4.15.0.1095.96
linux-image-generic-lpae-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-generic-hwe-16.04 (Ubuntu package): before 4.15.0.139.134
linux-image-gcp (Ubuntu package): before 4.15.0.1095.96
linux-image-azure-edge (Ubuntu package): before 4.15.0.1110.101
linux-image-aws-hwe (Ubuntu package): before 4.15.0.1096.89
linux-image-4.4.0-206-powerpc64-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc64-emb (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-smp (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-powerpc-e500mc (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-lowlatency (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic-lpae (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-206-generic (Ubuntu package): before 4.4.0-206.238
linux-image-4.4.0-1152-snapdragon (Ubuntu package): before 4.4.0-1152.162
linux-image-4.4.0-1124-aws (Ubuntu package): before 4.4.0-1124.138
linux-image-4.4.0-1090-kvm (Ubuntu package): before 4.4.0-1090.99
CPE2.3- cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:18.04:*:*:*:*:*:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1088-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1110-azure_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1148-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1067-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oracle_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-lts-18.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-139-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1098-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1096-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1095-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1087-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.15.0-1081-raspi2_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-virtual-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-oem_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-lowlatency-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gke_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-lpae-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-generic-hwe-16.04_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-gcp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-azure-edge_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-aws-hwe_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc64-emb_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-smp_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-powerpc-e500mc_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-lowlatency_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic-lpae_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-206-generic_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1152-snapdragon_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1124-aws_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:a:canonical:linux-image-4.4.0-1090-kvm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-4883-1
Q & A
Can this vulnerability be exploited remotely?
No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
