SUSE SLES12 Security Update : kernel (SUSE-SU-2020:3717-1)

medium Nessus Plugin ID 143860

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Synopsis

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

Description

The SUSE Linux Enterprise 12 SP5 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-15436: Fixed a use after free vulnerability in fs/block_dev.c which could have allowed local users to gain privileges or cause a denial of service (bsc#1179141).

CVE-2020-15437: Fixed a NULL pointer dereference which could have allowed local users to cause a denial of service(bsc#1179140).

CVE-2020-25668: Fixed a concurrency use-after-free in con_font_op (bsc#1178123).

CVE-2020-25669: Fixed a use-after-free read in sunkbd_reinit() (bsc#1178182).

CVE-2020-25704: Fixed a leak in perf_event_parse_addr_filter() (bsc#1178393).

CVE-2020-27777: Restrict RTAS requests from userspace (bsc#1179107)

CVE-2020-28915: Fixed a buffer over-read in the fbcon code which could have been used by local attackers to read kernel memory (bsc#1178886).

CVE-2020-28974: Fixed a slab-out-of-bounds read in fbcon which could have been used by local attackers to read privileged information or potentially crash the kernel (bsc#1178589).

CVE-2020-29371: Fixed uninitialized memory leaks to userspace (bsc#1179429).

CVE-2020-25705: Fixed an issue which could have allowed to quickly scan open UDP ports. This flaw allowed an off-path remote user to effectively bypassing source port UDP randomization (bsc#1175721).

The update package also includes non-security fixes. See advisory for details.

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 Workstation Extension 12-SP5 :

zypper in -t patch SUSE-SLE-WE-12-SP5-2020-3717=1

SUSE Linux Enterprise Software Development Kit 12-SP5 :

zypper in -t patch SUSE-SLE-SDK-12-SP5-2020-3717=1

SUSE Linux Enterprise Server 12-SP5 :

zypper in -t patch SUSE-SLE-SERVER-12-SP5-2020-3717=1

SUSE Linux Enterprise Live Patching 12-SP5 :

zypper in -t patch SUSE-SLE-Live-Patching-12-SP5-2020-3717=1

SUSE Linux Enterprise High Availability 12-SP5 :

zypper in -t patch SUSE-SLE-HA-12-SP5-2020-3717=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1050549

https://bugzilla.suse.com/show_bug.cgi?id=1067665

https://bugzilla.suse.com/show_bug.cgi?id=1111666

https://bugzilla.suse.com/show_bug.cgi?id=1112178

https://bugzilla.suse.com/show_bug.cgi?id=1158775

https://bugzilla.suse.com/show_bug.cgi?id=1170139

https://bugzilla.suse.com/show_bug.cgi?id=1170630

https://bugzilla.suse.com/show_bug.cgi?id=1172542

https://bugzilla.suse.com/show_bug.cgi?id=1172873

https://bugzilla.suse.com/show_bug.cgi?id=1174726

https://bugzilla.suse.com/show_bug.cgi?id=1175306

https://bugzilla.suse.com/show_bug.cgi?id=1175721

https://bugzilla.suse.com/show_bug.cgi?id=1175916

https://bugzilla.suse.com/show_bug.cgi?id=1176109

https://bugzilla.suse.com/show_bug.cgi?id=1176855

https://bugzilla.suse.com/show_bug.cgi?id=1176983

https://bugzilla.suse.com/show_bug.cgi?id=1177304

https://bugzilla.suse.com/show_bug.cgi?id=1177397

https://bugzilla.suse.com/show_bug.cgi?id=1177703

https://bugzilla.suse.com/show_bug.cgi?id=1177805

https://bugzilla.suse.com/show_bug.cgi?id=1177808

https://bugzilla.suse.com/show_bug.cgi?id=1177809

https://bugzilla.suse.com/show_bug.cgi?id=1177819

https://bugzilla.suse.com/show_bug.cgi?id=1177820

https://bugzilla.suse.com/show_bug.cgi?id=1178123

https://bugzilla.suse.com/show_bug.cgi?id=1178182

https://bugzilla.suse.com/show_bug.cgi?id=1178393

https://bugzilla.suse.com/show_bug.cgi?id=1178589

https://bugzilla.suse.com/show_bug.cgi?id=1178607

https://bugzilla.suse.com/show_bug.cgi?id=1178635

https://bugzilla.suse.com/show_bug.cgi?id=1178669

https://bugzilla.suse.com/show_bug.cgi?id=1178686

https://bugzilla.suse.com/show_bug.cgi?id=1178765

https://bugzilla.suse.com/show_bug.cgi?id=1178782

https://bugzilla.suse.com/show_bug.cgi?id=1178838

https://bugzilla.suse.com/show_bug.cgi?id=1178853

https://bugzilla.suse.com/show_bug.cgi?id=1178854

https://bugzilla.suse.com/show_bug.cgi?id=1178878

https://bugzilla.suse.com/show_bug.cgi?id=1178886

https://bugzilla.suse.com/show_bug.cgi?id=1178897

https://bugzilla.suse.com/show_bug.cgi?id=1178940

https://bugzilla.suse.com/show_bug.cgi?id=1178962

https://bugzilla.suse.com/show_bug.cgi?id=1179107

https://bugzilla.suse.com/show_bug.cgi?id=1179140

https://bugzilla.suse.com/show_bug.cgi?id=1179141

https://bugzilla.suse.com/show_bug.cgi?id=1179211

https://bugzilla.suse.com/show_bug.cgi?id=1179213

https://bugzilla.suse.com/show_bug.cgi?id=1179259

https://bugzilla.suse.com/show_bug.cgi?id=1179424

https://bugzilla.suse.com/show_bug.cgi?id=1179426

https://bugzilla.suse.com/show_bug.cgi?id=1179427

https://bugzilla.suse.com/show_bug.cgi?id=1179429

https://bugzilla.suse.com/show_bug.cgi?id=927455

https://www.suse.com/security/cve/CVE-2020-15436/

https://www.suse.com/security/cve/CVE-2020-15437/

https://www.suse.com/security/cve/CVE-2020-25668/

https://www.suse.com/security/cve/CVE-2020-25669/

https://www.suse.com/security/cve/CVE-2020-25704/

https://www.suse.com/security/cve/CVE-2020-25705/

https://www.suse.com/security/cve/CVE-2020-27777/

https://www.suse.com/security/cve/CVE-2020-28915/

https://www.suse.com/security/cve/CVE-2020-28974/

https://www.suse.com/security/cve/CVE-2020-29371/

http://www.nessus.org/u?9106a420

Plugin Details

Severity: Medium

ID: 143860

File Name: suse_SU-2020-3717-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 12/9/2020

Updated: 4/16/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-27777

VPR

Risk Factor: High

Score: 8.5

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: Medium

Base Score: 6.7

Temporal Score: 5.8

Vector: CVSS:3.0/AV:L/AC:L/PR:H/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:kernel-default, p-cpe:/a:novell:suse_linux:kernel-default-base, p-cpe:/a:novell:suse_linux:kernel-default-base-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-debugsource, p-cpe:/a:novell:suse_linux:kernel-default-devel, p-cpe:/a:novell:suse_linux:kernel-default-devel-debuginfo, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-syms, 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: 12/9/2020

Vulnerability Publication Date: 11/17/2020

Reference Information

CVE: CVE-2020-15436, CVE-2020-15437, CVE-2020-25668, CVE-2020-25669, CVE-2020-25704, CVE-2020-25705, CVE-2020-27777, CVE-2020-28915, CVE-2020-28974, CVE-2020-29371