Risk | Medium |
Patch available | YES |
Number of vulnerabilities | 3 |
CVE-ID | CVE-2020-28374 CVE-2021-27364 CVE-2021-27365 |
CWE-ID | CWE-22 CWE-264 CWE-119 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
kpatch-patch-3_10_0-1062_45_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_43_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_40_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_37_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_36_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_33_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_31_3 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_31_2 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_30_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_26_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions Operating systems & Components / Operating system package or component kpatch-patch-3_10_0-1062_46_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux for x86_64 - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system Red Hat Enterprise Linux for Power, little endian - Extended Update Support Operating systems & Components / Operating system Red Hat Enterprise Linux Server - AUS Operating systems & Components / Operating system |
Vendor | Red Hat Inc. |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
EUVDB-ID: #VU49914
Risk: Medium
CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-28374
CWE-ID:
CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Exploit availability: No
DescriptionThe vulnerability allows a remote user to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in drivers/target/target_core_xcopy.c in the Linux kernel. A remote user with access to iSCSI LUN can send a specially crafted XCOPY request and read or write arbitrary files on the system.
Install updates from vendor's website.
kpatch-patch-3_10_0-1062_45_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_43_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_40_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_37_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_36_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_33_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_3 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_2 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_30_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_26_1 (Red Hat package): 1-1.el7
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 7.7
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server - TUS: 7.7
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.7
Red Hat Enterprise Linux Server - AUS: 7.7
kpatch-patch-3_10_0-1062_46_1 (Red Hat package): before 1-2.el7
External linkshttp://access.redhat.com/errata/RHSA-2021:1532
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
EUVDB-ID: #VU51452
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
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.
Install updates from vendor's website.
kpatch-patch-3_10_0-1062_45_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_43_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_40_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_37_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_36_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_33_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_3 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_2 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_30_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_26_1 (Red Hat package): 1-1.el7
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 7.7
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server - TUS: 7.7
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.7
Red Hat Enterprise Linux Server - AUS: 7.7
kpatch-patch-3_10_0-1062_46_1 (Red Hat package): before 1-2.el7
External linkshttp://access.redhat.com/errata/RHSA-2021:1532
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.
EUVDB-ID: #VU51451
Risk: Low
CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
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.
Install updates from vendor's website.
kpatch-patch-3_10_0-1062_45_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_43_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_40_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_37_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_36_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_33_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_3 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_31_2 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_30_1 (Red Hat package): 1-1.el7
kpatch-patch-3_10_0-1062_26_1 (Red Hat package): 1-1.el7
Red Hat Enterprise Linux for x86_64 - Extended Update Support: 7.7
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions: 7.7
Red Hat Enterprise Linux Server - TUS: 7.7
Red Hat Enterprise Linux for Power, little endian - Extended Update Support: 7.7
Red Hat Enterprise Linux Server - AUS: 7.7
kpatch-patch-3_10_0-1062_46_1 (Red Hat package): before 1-2.el7
External linkshttp://access.redhat.com/errata/RHSA-2021:1532
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.