openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2409-1)

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openSUSE 15 Security Update : kernel (openSUSE-SU-2021:2409-1)

high Nessus Plugin ID 151851

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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-2021:2409-1 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.

Plugin Details

Severity: High

ID: 151851

File Name: openSUSE-2021-2409.nasl

Version: 1.4

Type: local

Agent: unix

Family: SuSE Local Security Checks

Published: 7/21/2021

Updated: 1/20/2022

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Source: CVE-2021-33909

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:opensuse:cluster-md-kmp-azure, p-cpe:/a:novell:opensuse:dlm-kmp-azure, p-cpe:/a:novell:opensuse:gfs2-kmp-azure, p-cpe:/a:novell:opensuse:kernel-azure, p-cpe:/a:novell:opensuse:kernel-azure-devel, p-cpe:/a:novell:opensuse:kernel-azure-extra, p-cpe:/a:novell:opensuse:kernel-azure-livepatch-devel, p-cpe:/a:novell:opensuse:kernel-azure-optional, p-cpe:/a:novell:opensuse:kernel-devel-azure, p-cpe:/a:novell:opensuse:kernel-source-azure, p-cpe:/a:novell:opensuse:kernel-syms-azure, p-cpe:/a:novell:opensuse:kselftests-kmp-azure, p-cpe:/a:novell:opensuse:ocfs2-kmp-azure, p-cpe:/a:novell:opensuse:reiserfs-kmp-azure, cpe:/o:novell:opensuse:15.3

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

Metasploit (Netfilter x_tables Heap OOB Write Privilege Escalation)

Reference Information

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

IAVA: 2021-A-0350