Detections
Analytics

SUSE SLES12 / SLES15 Security Update : kernel (Live Patch 11 for SLE 15 SP2) (SUSE-SU-2021:2366-1)

high Nessus Plugin ID 151763

Language:

Synopsis

The remote SUSE host is missing a security update.

Description

The remote SUSE Linux SLES12 / SLES15 host has packages installed that are affected by a vulnerability as referenced in the SUSE-SU-2021:2366-1 advisory.

 - A race condition in Linux kernel SCTP sockets (net/sctp/socket.c) before 5.12-rc8 can lead to kernel privilege escalation from the context of a network service or an unprivileged process. If sctp_destroy_sock is called without sock_net(sk)->sctp.addr_wq_lock then an element is removed from the auto_asconf_splist list without any proper locking. This can be exploited by an attacker with network service privileges to escalate to root or from the context of an unprivileged user directly if a BPF_CGROUP_INET_SOCK_CREATE is attached which denies creation of some SCTP socket. (CVE-2021-23133)

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-5_3_18-24_52-default and / or kgraft-patch-4_12_14-122_71-default packages.

See Also

https://bugzilla.suse.com/1185901

https://www.suse.com/security/cve/CVE-2021-23133

http://www.nessus.org/u?c643b68e

Plugin Details

Severity: High

ID: 151763

File Name: suse_SU-2021-2366-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 7/16/2021

Updated: 7/13/2023

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS Score Source: CVE-2021-23133

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.3

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

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

Vulnerability Information

CPE: cpe:/o:novell:suse_linux:12, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-24_52-default, p-cpe:/a:novell:suse_linux:kgraft-patch-4_12_14-122_71-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: 7/15/2021

Vulnerability Publication Date: 4/22/2021

Reference Information

CVE: CVE-2021-23133

SuSE: SUSE-SU-2021:2366-1