SUSE SLES12 Security Update : kernel (SUSE-SU-2019:3261-1)

High Nessus Plugin ID 132007

Synopsis

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

Description

This update for the Linux Kernel 4.4.121-92_114 fixes several issues.

The following security issues were fixed :

CVE-2018-20856: Fixed a use-after-free in __blk_drain_queue() due to an improper error handling (bsc#1156331).

CVE-2019-13272: Fixed a privilege escalation from user to root due to improper handling of credentials by leveraging certain scenarios with a parent-child process relationship (bsc#1156321).

CVE-2019-10220: Fixed an issue where samba servers could inject relative paths in directory entry lists (bsc#1153108).

The following bugs were fixed: Fixed boot up hang revealed by int3 self test (bsc#1157770).

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or 'zypper patch'.

Alternatively you can run the command listed for your product :

SUSE Linux Enterprise Server for SAP 12-SP2:zypper in -t patch SUSE-SLE-SAP-12-SP2-2019-3261=1 SUSE-SLE-SAP-12-SP2-2019-3262=1

SUSE Linux Enterprise Server 12-SP2-LTSS:zypper in -t patch SUSE-SLE-SERVER-12-SP2-2019-3261=1 SUSE-SLE-SERVER-12-SP2-2019-3262=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1153108

https://bugzilla.suse.com/show_bug.cgi?id=1156321

https://bugzilla.suse.com/show_bug.cgi?id=1156331

https://bugzilla.suse.com/show_bug.cgi?id=1157770

https://www.suse.com/security/cve/CVE-2018-20856/

https://www.suse.com/security/cve/CVE-2019-10220/

https://www.suse.com/security/cve/CVE-2019-13272/

http://www.nessus.org/u?805b93a0

Plugin Details

Severity: High

ID: 132007

File Name: suse_SU-2019-3261-1.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2019/12/12

Updated: 2019/12/18

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS Score Source: CVE-2019-10220

CVSS v2.0

Base Score: 9.3

Temporal Score: 8.1

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:H/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 8.4

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

Temporal Vector: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_114-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_117-default, cpe:/o:novell:suse_linux:12

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: 2019/12/11

Vulnerability Publication Date: 2019/07/17

Exploitable With

Metasploit (Linux Polkit pkexec helper PTRACE_TRACEME local root exploit)

Reference Information

CVE: CVE-2018-20856, CVE-2019-10220, CVE-2019-13272