SUSE SLED15 / SLES15 Security Update : kernel (SUSE-SU-2021:2438-1)

high Nessus Plugin ID 151997

Synopsis

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

Description

The remote SUSE Linux SLED15 / SLES15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2021:2438-1 advisory.

- A heap out-of-bounds write affecting Linux since v2.6.19-rc1 was discovered in net/netfilter/x_tables.c.
This allows an attacker to gain privileges or cause a DoS (via heap memory corruption) through user name space (CVE-2021-22555)

- fs/seq_file.c in the Linux kernel 3.16 through 5.13.x before 5.13.4 does not properly restrict seq buffer allocations, leading to an integer overflow, an Out-of-bounds Write, and escalation to root by an unprivileged user, aka CID-8cae8cd89f05. (CVE-2021-33909)

- kernel/module.c in the Linux kernel before 5.12.14 mishandles Signature Verification, aka CID-0c18f29aae7c. Without CONFIG_MODULE_SIG, verification that a kernel module is signed, for loading via init_module, does not occur for a module.sig_enforce=1 command-line argument. (CVE-2021-35039)

- To fix this vulnerability, update the affected packages: linux linux-esx (CVE-2021-3609)

- An out-of-bounds memory write flaw was found in the Linux kernel's joystick devices subsystem in versions before 5.9-rc1, in the way the user calls ioctl JSIOCSBTNMAP. This flaw allows a local user to crash the system or possibly escalate their privileges on the system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability. (CVE-2021-3612)

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 packages.

See Also

https://bugzilla.suse.com/1065729

https://bugzilla.suse.com/1085224

https://bugzilla.suse.com/1094840

https://bugzilla.suse.com/1152472

https://bugzilla.suse.com/1152489

https://bugzilla.suse.com/1170511

https://bugzilla.suse.com/1179243

https://bugzilla.suse.com/1183871

https://bugzilla.suse.com/1184114

https://bugzilla.suse.com/1184804

https://bugzilla.suse.com/1185308

https://bugzilla.suse.com/1185791

https://bugzilla.suse.com/1187215

https://bugzilla.suse.com/1187585

https://bugzilla.suse.com/1188036

https://bugzilla.suse.com/1188062

https://bugzilla.suse.com/1188080

https://bugzilla.suse.com/1188116

https://bugzilla.suse.com/1188121

https://bugzilla.suse.com/1188176

https://bugzilla.suse.com/1188267

https://bugzilla.suse.com/1188268

https://bugzilla.suse.com/1188269

http://www.nessus.org/u?d861a0a9

https://www.suse.com/security/cve/CVE-2021-22555

https://www.suse.com/security/cve/CVE-2021-33909

https://www.suse.com/security/cve/CVE-2021-35039

https://www.suse.com/security/cve/CVE-2021-3609

https://www.suse.com/security/cve/CVE-2021-3612

Plugin Details

Severity: High

ID: 151997

File Name: suse_SU-2021-2438-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 7/22/2021

Updated: 1/20/2022

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Source: CVE-2021-3612

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

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

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:novell:suse_linux:cluster-md-kmp-default, p-cpe:/a:novell:suse_linux:dlm-kmp-default, p-cpe:/a:novell:suse_linux:gfs2-kmp-default, 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-devel, p-cpe:/a:novell:suse_linux:kernel-default-extra, p-cpe:/a:novell:suse_linux:kernel-default-livepatch, p-cpe:/a:novell:suse_linux:kernel-default-livepatch-devel, p-cpe:/a:novell:suse_linux:kernel-devel, p-cpe:/a:novell:suse_linux:kernel-livepatch-5_3_18-24_75-default, p-cpe:/a:novell:suse_linux:kernel-macros, p-cpe:/a:novell:suse_linux:kernel-obs-build, p-cpe:/a:novell:suse_linux:kernel-preempt, p-cpe:/a:novell:suse_linux:kernel-preempt-devel, p-cpe:/a:novell:suse_linux:kernel-preempt-extra, p-cpe:/a:novell:suse_linux:kernel-source, p-cpe:/a:novell:suse_linux:kernel-syms, p-cpe:/a:novell:suse_linux:ocfs2-kmp-default, p-cpe:/a:novell:suse_linux:reiserfs-kmp-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: 7/21/2021

Vulnerability Publication Date: 4/20/2021

Exploitable With

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2021-3609, CVE-2021-3612, CVE-2021-22555, CVE-2021-33909, CVE-2021-35039

SuSE: SUSE-SU-2021:2438-1

IAVA: 2021-A-0350