Red Hat Enterprise Linux 8.2 update for kpatch-patch

Published: 2021-06-02

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-0466 CVE-2020-28374
CWE-ID	CWE-264 CWE-22
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	kpatch-patch-4_18_0-193_6_3 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_47_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_46_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_41_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_40_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_37_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_29_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_28_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_19_1 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_14_3 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_13_2 (Red Hat package) Operating systems & Components / Operating system package or component kpatch-patch-4_18_0-193_51_1 (Red Hat package) Operating systems & Components / Operating system package or component Red Hat Enterprise Linux Server - TUS Operating systems & Components / Operating system
Vendor	Red Hat Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Permissions, Privileges, and Access Controls

EUVDB-ID: #VU52033

Risk: Low

CVSSv3.1:

CVE-ID: CVE-2020-0466

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to unspecified error, related to I/O subsystem in kernel. A local user can elevated privileges on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

kpatch-patch-4_18_0-193_6_3 (Red Hat package): 1-7.el8_2 - 1-10.el8_2

kpatch-patch-4_18_0-193_47_1 (Red Hat package): 1-3.el8_2

kpatch-patch-4_18_0-193_46_1 (Red Hat package): 1-3.el8_2

kpatch-patch-4_18_0-193_41_1 (Red Hat package): 1-3.el8_2 - 1-6.el8_2

kpatch-patch-4_18_0-193_40_1 (Red Hat package): 1-3.el8_2 - 1-6.el8_2

kpatch-patch-4_18_0-193_37_1 (Red Hat package): 1-3.el8_2 - 1-6.el8_2

kpatch-patch-4_18_0-193_29_1 (Red Hat package): 1-3.el8_2 - 1-6.el8_2

kpatch-patch-4_18_0-193_28_1 (Red Hat package): 1-3.el8_2 - 1-6.el8_2

kpatch-patch-4_18_0-193_19_1 (Red Hat package): 1-5.el8_2 - 1-8.el8_2

kpatch-patch-4_18_0-193_14_3 (Red Hat package): 1-5.el8_2 - 1-8.el8_2

kpatch-patch-4_18_0-193_13_2 (Red Hat package): 1-5.el8_2 - 1-8.el8_2

Red Hat Enterprise Linux Server - TUS: 8.2

kpatch-patch-4_18_0-193_51_1 (Red Hat package): before 1-1.el8_2

CPE2.3

cpe:2.3:o:red_hat:kpatch-patch-4_18_0-193_6_3:1-10.el8_2:*:*:*:*:red_hat_enterprise_linux:*:*

External links

http://access.redhat.com/errata/RHSA-2021:2167

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?

2) Path traversal

EUVDB-ID: #VU49914

Risk: Medium

CVSSv3.1:

CVE-ID: CVE-2020-28374

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The 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.