SUSE SLES12 Security Update : kernel (SUSE-SU-2020:2152-1)

high Nessus Plugin ID 139408
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Synopsis

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

Description

The SUSE Linux Enterprise 12 SP3 kernel was updated to receive various security and bugfixes.

The following security bugs were fixed :

CVE-2020-10135: Legacy pairing and secure-connections pairing authentication in Bluetooth may have allowed an unauthenticated user to complete authentication without pairing credentials via adjacent access. An unauthenticated, adjacent attacker could impersonate a Bluetooth BR/EDR master or slave to pair with a previously paired remote device to successfully complete the authentication procedure without knowing the link key (bnc#1171988).

CVE-2020-10711: A NULL pointer dereference flaw was found in the SELinux subsystem. This flaw occurs while importing the Commercial IP Security Option (CIPSO) protocol's category bitmap into the SELinux extensible bitmap via the' ebitmap_netlbl_import' routine. This flaw allowed a remote network user to crash the system kernel, resulting in a denial of service (bnc#1171191).

CVE-2020-10751: A flaw was found in the SELinux LSM hook implementation, where it incorrectly assumed that an skb would only contain a single netlink message. The hook would incorrectly only validate the first netlink message in the skb and allow or deny the rest of the messages within the skb with the granted permission without further processing (bnc#1171189).

CVE-2019-20812: An issue was discovered in the prb_calc_retire_blk_tmo() function in net/packet/af_packet.c can result in a denial of service (CPU consumption and soft lockup) in a certain failure case involving TPACKET_V3, aka CID-b43d1f9f7067 (bnc#1172453).

CVE-2020-10732: A flaw was found in the implementation of userspace core dumps. This flaw allowed an attacker with a local account to crash a trivial program and exfiltrate private kernel data (bnc#1171220).

CVE-2020-0305: In cdev_get of char_dev.c, there is a possible use-after-free due to a race condition. This could lead to local escalation of privilege with System execution privileges needed. User interaction is not needed for exploitation (bnc#1174462).

CVE-2020-12771: btree_gc_coalesce in drivers/md/bcache/btree.c had a deadlock if a coalescing operation fails (bnc#1171732).

CVE-2020-10773: A kernel stack information leak on s390/s390x was fixed (bnc#1172999).

CVE-2020-14416: A race condition in tty->disc_data handling in the slip and slcan line discipline could lead to a use-after-free, aka CID-0ace17d56824. This affects drivers/net/slip/slip.c and drivers/net/can/slcan.c (bnc#1162002).

CVE-2020-13974: drivers/tty/vt/keyboard.c had an integer overflow if k_ascii is called several times in a row, aka CID-b86dab054059.
(bnc#1172775).

CVE-2019-20810: go7007_snd_init in drivers/media/usb/go7007/snd-go7007.c in the Linux kernel did not call snd_card_free for a failure path, which causes a memory leak, aka CID-9453264ef586 (bnc#1172458).

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 OpenStack Cloud Crowbar 8 :

zypper in -t patch SUSE-OpenStack-Cloud-Crowbar-8-2020-2152=1

SUSE OpenStack Cloud 8 :

zypper in -t patch SUSE-OpenStack-Cloud-8-2020-2152=1

SUSE Linux Enterprise Server for SAP 12-SP3 :

zypper in -t patch SUSE-SLE-SAP-12-SP3-2020-2152=1

SUSE Linux Enterprise Server 12-SP3-LTSS :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-2020-2152=1

SUSE Linux Enterprise Server 12-SP3-BCL :

zypper in -t patch SUSE-SLE-SERVER-12-SP3-BCL-2020-2152=1

SUSE Linux Enterprise High Availability 12-SP3 :

zypper in -t patch SUSE-SLE-HA-12-SP3-2020-2152=1

SUSE Enterprise Storage 5 :

zypper in -t patch SUSE-Storage-5-2020-2152=1

HPE Helion Openstack 8 :

zypper in -t patch HPE-Helion-OpenStack-8-2020-2152=1

See Also

https://bugzilla.suse.com/show_bug.cgi?id=1065729

https://bugzilla.suse.com/show_bug.cgi?id=1146351

https://bugzilla.suse.com/show_bug.cgi?id=1149652

https://bugzilla.suse.com/show_bug.cgi?id=1152457

https://bugzilla.suse.com/show_bug.cgi?id=1162002

https://bugzilla.suse.com/show_bug.cgi?id=1164910

https://bugzilla.suse.com/show_bug.cgi?id=1170011

https://bugzilla.suse.com/show_bug.cgi?id=1170618

https://bugzilla.suse.com/show_bug.cgi?id=1171078

https://bugzilla.suse.com/show_bug.cgi?id=1171189

https://bugzilla.suse.com/show_bug.cgi?id=1171191

https://bugzilla.suse.com/show_bug.cgi?id=1171220

https://bugzilla.suse.com/show_bug.cgi?id=1171732

https://bugzilla.suse.com/show_bug.cgi?id=1171988

https://bugzilla.suse.com/show_bug.cgi?id=1172453

https://bugzilla.suse.com/show_bug.cgi?id=1172458

https://bugzilla.suse.com/show_bug.cgi?id=1172775

https://bugzilla.suse.com/show_bug.cgi?id=1172999

https://bugzilla.suse.com/show_bug.cgi?id=1173280

https://bugzilla.suse.com/show_bug.cgi?id=1173658

https://bugzilla.suse.com/show_bug.cgi?id=1174115

https://bugzilla.suse.com/show_bug.cgi?id=1174462

https://bugzilla.suse.com/show_bug.cgi?id=1174543

https://www.suse.com/security/cve/CVE-2019-20810/

https://www.suse.com/security/cve/CVE-2019-20812/

https://www.suse.com/security/cve/CVE-2020-0305/

https://www.suse.com/security/cve/CVE-2020-10135/

https://www.suse.com/security/cve/CVE-2020-10711/

https://www.suse.com/security/cve/CVE-2020-10732/

https://www.suse.com/security/cve/CVE-2020-10751/

https://www.suse.com/security/cve/CVE-2020-10773/

https://www.suse.com/security/cve/CVE-2020-12771/

https://www.suse.com/security/cve/CVE-2020-13974/

https://www.suse.com/security/cve/CVE-2020-14416/

http://www.nessus.org/u?5ce337e5

Plugin Details

Severity: High

ID: 139408

File Name: suse_SU-2020-2152-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 8/7/2020

Updated: 1/13/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-13974

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7

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

Temporal Vector: E:P/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-kgraft, p-cpe:/a:novell:suse_linux:kernel-default-man, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_180-94_127-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_4_180-94_127-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 Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/6/2020

Vulnerability Publication Date: 5/9/2020

Reference Information

CVE: CVE-2019-20810, CVE-2019-20812, CVE-2020-0305, CVE-2020-10135, CVE-2020-10711, CVE-2020-10732, CVE-2020-10751, CVE-2020-10773, CVE-2020-12771, CVE-2020-13974, CVE-2020-14416