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openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2415-1)

high Nessus Plugin ID 151847

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Synopsis

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

Description

The remote SUSE Linux SUSE15 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2021:2415-1 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)

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/1188062

https://bugzilla.suse.com/1188116

http://www.nessus.org/u?03083f22

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

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

Plugin Details

Severity: High

ID: 151847

File Name: openSUSE-2021-2415.nasl

Version: 1.7

Type: local

Agent: unix

Published: 7/21/2021

Updated: 1/17/2023

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2021-33909

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: CVSS:3.0/E:H/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:novell:opensuse:kernel-default-livepatch, p-cpe:/a:novell:opensuse:kselftests-km64kb, p-cpe:/a:novell:opensuse:gfs2-kmdefault, p-cpe:/a:novell:opensuse:kernel-default-base, p-cpe:/a:novell:opensuse:dlm-kmdefault, p-cpe:/a:novell:opensuse:cluster-md-kmdefault, p-cpe:/a:novell:opensuse:dlm-km64kb, p-cpe:/a:novell:opensuse:kernel-default, p-cpe:/a:novell:opensuse:kernel-kvmsmall-livepatch-devel, p-cpe:/a:novell:opensuse:kernel-macros, p-cpe:/a:novell:opensuse:kernel-preempt, p-cpe:/a:novell:opensuse:kselftests-kmdefault, p-cpe:/a:novell:opensuse:ocfs2-kmpreempt, p-cpe:/a:novell:opensuse:reiserfs-kmpreempt, p-cpe:/a:novell:opensuse:kernel-64kb-optional, p-cpe:/a:novell:opensuse:cluster-md-kmpreempt, p-cpe:/a:novell:opensuse:kernel-kvmsmall, p-cpe:/a:novell:opensuse:kernel-devel, p-cpe:/a:novell:opensuse:kernel-default-extra, p-cpe:/a:novell:opensuse:kernel-default-livepatch-devel, p-cpe:/a:novell:opensuse:kernel-obs-build, p-cpe:/a:novell:opensuse:kernel-debug-devel, p-cpe:/a:novell:opensuse:gfs2-km64kb, p-cpe:/a:novell:opensuse:kernel-64kb-devel, p-cpe:/a:novell:opensuse:kernel-default-base-rebuild, p-cpe:/a:novell:opensuse:kernel-obs-qa, p-cpe:/a:novell:opensuse:kernel-source-vanilla, p-cpe:/a:novell:opensuse:kselftests-kmpreempt, p-cpe:/a:novell:opensuse:reiserfs-kmdefault, p-cpe:/a:novell:opensuse:kernel-64kb-extra, p-cpe:/a:novell:opensuse:kernel-preempt-extra, p-cpe:/a:novell:opensuse:kernel-zfcpdump, p-cpe:/a:novell:opensuse:kernel-kvmsmall-devel, p-cpe:/a:novell:opensuse:kernel-debug, cpe:/o:novell:opensuse:15.3, p-cpe:/a:novell:opensuse:reiserfs-km64kb, p-cpe:/a:novell:opensuse:kernel-debug-livepatch-devel, p-cpe:/a:novell:opensuse:ocfs2-km64kb, p-cpe:/a:novell:opensuse:kernel-64kb, p-cpe:/a:novell:opensuse:ocfs2-kmdefault, p-cpe:/a:novell:opensuse:kernel-default-optional, p-cpe:/a:novell:opensuse:kernel-preempt-optional, p-cpe:/a:novell:opensuse:kernel-source, p-cpe:/a:novell:opensuse:gfs2-kmpreempt, p-cpe:/a:novell:opensuse:kernel-preempt-livepatch-devel, p-cpe:/a:novell:opensuse:kernel-64kb-livepatch-devel, p-cpe:/a:novell:opensuse:kernel-preempt-devel, p-cpe:/a:novell:opensuse:kernel-syms, p-cpe:/a:novell:opensuse:kernel-default-devel, p-cpe:/a:novell:opensuse:dlm-kmpreempt, p-cpe:/a:novell:opensuse:cluster-md-km64kb

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: 7/20/2021

Vulnerability Publication Date: 4/20/2021

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

CVE: CVE-2021-22555, CVE-2021-33909

IAVA: 2021-A-0350