SUSE SLES12 Security Update : kernel (SUSE-SU-2021:0835-1)

high Nessus Plugin ID 147875
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

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

Description

This update for the Linux Kernel 4.4.121-92_149 fixes several issues.

The following security issues were fixed :

CVE-2020-27786: Fixed a potential user after free which could have led to memory corruption or privilege escalation (bsc#1179616).

CVE-2020-28374: Fixed insufficient identifier checking in the LIO SCSI target code which could have been used by remote attackers to read or write files via directory traversal in an XCOPY request (bsc#1178684).

CVE-2020-25645: Fixed an issue where the traffic between two Geneve endpoints may have been unencrypted when IPsec was configured to encrypt traffic for the specific UDP port used by the GENEVE tunnel allowing anyone between the two endpoints to read the traffic unencrypted (bsc#1177513).

CVE-2020-0429: Fixed a potential memory corruption due to a use after free which could have led local escalation of privilege with System execution privileges needed (bsc#1176931).

CVE-2020-1749: Fixed an issue in some networking protocols in IPsec, such as VXLAN and GENEVE tunnels over IPv6 where the kernel was not correctly routing tunneled data over the encrypted link rather sending the data unencrypted (bsc#1165631).

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-SP3 :

zypper in -t patch SUSE-SLE-SAP-12-SP3-2021-828=1

SUSE Linux Enterprise Server for SAP 12-SP2 :

zypper in -t patch SUSE-SLE-SAP-12-SP2-2021-835=1

SUSE Linux Enterprise Server 12-SP3-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-2021-828=1

SUSE Linux Enterprise Server 12-SP2-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP2-2021-835=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1165631

https://bugzilla.suse.com/show_bug.cgi?id=1176931

https://bugzilla.suse.com/show_bug.cgi?id=1177513

https://bugzilla.suse.com/show_bug.cgi?id=1178684

https://bugzilla.suse.com/show_bug.cgi?id=1179616

https://www.suse.com/security/cve/CVE-2020-0429/

https://www.suse.com/security/cve/CVE-2020-1749/

https://www.suse.com/security/cve/CVE-2020-25645/

https://www.suse.com/security/cve/CVE-2020-27786/

https://www.suse.com/security/cve/CVE-2020-28374/

http://www.nessus.org/u?3328a685

Plugin Details

Severity: High

ID: 147875

File Name: suse_SU-2021-0835-1.nasl

Version: 1.2

Type: local

Agent: unix

Published: 3/18/2021

Updated: 3/22/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-27786

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_121-92_149-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_180-94_138-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_180-94_138-default-debuginfo, cpe:/o:novell:suse_linux:12

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/17/2021

Vulnerability Publication Date: 9/9/2020

Reference Information

CVE: CVE-2020-0429, CVE-2020-1749, CVE-2020-25645, CVE-2020-27786, CVE-2020-28374