Ubuntu update for edk2
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2019-11098 CVE-2021-23840 CVE-2021-3712 CVE-2021-38575 |
| CWE-ID | CWE-20 CWE-125 CWE-119 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
Ubuntu Operating systems & Components / Operating system ovmf (Ubuntu package) Operating systems & Components / Operating system package or component qemu-efi-aarch64 (Ubuntu package) Operating systems & Components / Operating system package or component ovmf-ia32 (Ubuntu package) Operating systems & Components / Operating system package or component qemu-efi (Ubuntu package) Operating systems & Components / Operating system package or component qemu-efi-arm (Ubuntu package) Operating systems & Components / Operating system package or component |
| Vendor | Canonical Ltd. |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Input validation error
EUVDB-ID: #VU70612
Risk: Low
CVSSv4.0: 4 [CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2019-11098
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows an attacker to compromise the affected system.
The vulnerability exists due to insufficient validation of user-supplied input in MdeModulePkg. An attacker with physical access to the affected system can execute arbitrary code.
Update the affected package edk2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 21.04
ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
ovmf-ia32 (Ubuntu package): before 2020.11-4ubuntu0.1
qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
CPE2.3- cpe:2.3:o:canonical:ubuntu:20.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu:21.04:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ovmf_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-aarch64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:ovmf-ia32_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-arm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5088-1
Q & A
Can this vulnerability be exploited remotely?
No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
2) Input validation error
EUVDB-ID: #VU50745
Risk: Medium
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-23840
CWE-ID:
CWE-20 - Improper input validation
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input during EVP_CipherUpdate, EVP_EncryptUpdate and EVP_DecryptUpdate calls. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.
MitigationUpdate the affected package edk2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 21.04
ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
ovmf-ia32 (Ubuntu package): before 2020.11-4ubuntu0.1
qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
CPE2.3- cpe:2.3:o:canonical:ovmf_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-aarch64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:ovmf-ia32_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-arm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5088-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
3) Out-of-bounds read
EUVDB-ID: #VU56064
Risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-3712
CWE-ID:
CWE-125 - Out-of-bounds read
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing ASN.1 strings related to a confusion with NULL termination of strings in array. A remote attacker can pass specially crafted data to the application to trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack.
Update the affected package edk2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 21.04
ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
ovmf-ia32 (Ubuntu package): before 2020.11-4ubuntu0.1
qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
CPE2.3- cpe:2.3:o:canonical:ovmf_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-aarch64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:ovmf-ia32_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-arm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5088-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
4) Buffer overflow
EUVDB-ID: #VU56490
Risk: Medium
CVSSv4.0: 5.2 [CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-38575
CWE-ID:
CWE-119 - Memory corruption
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error in the IScsiHexToBin() function in NetworkPkg/IScsiDxe. A remote attacker with ability to inject data into communication between edk2 and the iSCSI target can execute arbitrary code on the target system.
Update the affected package edk2 to the latest version.
Vulnerable software versionsUbuntu: 20.04 - 21.04
ovmf (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-aarch64 (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
ovmf-ia32 (Ubuntu package): before 2020.11-4ubuntu0.1
qemu-efi (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
qemu-efi-arm (Ubuntu package): before 0~20191122.bd85bf54-2ubuntu3.3
CPE2.3- cpe:2.3:o:canonical:ovmf_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-aarch64_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:ovmf-ia32_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi_ubuntu_package:*:*:*:*:*:ubuntu:*:*
- cpe:2.3:o:canonical:qemu-efi-arm_ubuntu_package:*:*:*:*:*:ubuntu:*:*
https://ubuntu.com/security/notices/USN-5088-1
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
