SUSE SLES15 Security Update : kernel (Live Patch 14 for SLE 15 SP2) (SUSE-SU-2021:2538-1)

high Nessus Plugin ID 152116

Language:

Synopsis

The remote SUSE host is missing one or more security updates.

Description

The remote SUSE Linux SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2538-1 advisory.

- An issue was discovered in the Linux kernel before 5.10. drivers/infiniband/core/ucma.c has a use-after- free because the ctx is reached via the ctx_list in some ucma_migrate_id situations where ucma_close is called, aka CID-f5449e74802c. (CVE-2020-36385)

- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)

- fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel-livepatch-4_12_14-150_72-default, kernel-livepatch-4_12_14-197_92-default and / or kernel- livepatch-5_3_18-24_67-default packages.

See Also

https://bugzilla.suse.com/1187052

https://bugzilla.suse.com/1188117

https://bugzilla.suse.com/1188257

http://www.nessus.org/u?3ae7f791

https://www.suse.com/security/cve/CVE-2020-36385

https://www.suse.com/security/cve/CVE-2021-22555

https://www.suse.com/security/cve/CVE-2021-33909

Plugin Details

Severity: High

ID: 152116

File Name: suse_SU-2021-2538-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 7/28/2021

Updated: 1/20/2022

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Source: CVE-2021-33909

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kernel-livepatch-4_12_14-150_72-default, p-cpe:/a:novell:suse_linux:kernel-livepatch-4_12_14-197_92-default, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-24_67-default, cpe:/o:novell:suse_linux:15

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/SuSE/release, Host/SuSE/rpm-list

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/27/2021

Vulnerability Publication Date: 4/20/2021

Exploitable With

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2020-36385, CVE-2021-22555, CVE-2021-33909

SuSE: SUSE-SU-2021:2538-1

IAVA: 2021-A-0350