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Ubuntu 18.04 ESM / 20.04 LTS : Linux kernel vulnerabilities (USN-6605-1)

high Nessus Plugin ID 189614

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Synopsis

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

Description

The remote Ubuntu 18.04 ESM / 20.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-6605-1 advisory.

 - An out-of-bounds access vulnerability involving netfilter was reported and fixed as: f1082dd31fe4 (netfilter: nf_tables: Reject tables of unsupported family); While creating a new netfilter table, lack of a safeguard against invalid nf_tables family (pf) values within `nf_tables_newtable` function enables an attacker to achieve out-of-bounds access. (CVE-2023-6040)

 - An out-of-bounds read vulnerability was found in smbCalcSize in fs/smb/client/netmisc.c in the Linux Kernel. This issue could allow a local attacker to crash the system or leak internal kernel information.
 (CVE-2023-6606)

 - A heap out-of-bounds write vulnerability in the Linux kernel's Performance Events system component can be exploited to achieve local privilege escalation. A perf_event's read_size can overflow, leading to an heap out-of-bounds increment or write in perf_read_group(). We recommend upgrading past commit 382c27f4ed28f803b1f1473ac2d8db0afc795a1b. (CVE-2023-6931)

 - A use-after-free vulnerability in the Linux kernel's ipv4: igmp component can be exploited to achieve local privilege escalation. A race condition can be exploited to cause a timer be mistakenly registered on a RCU read locked object which is freed by another thread. We recommend upgrading past commit e2b706c691905fe78468c361aaabc719d0a496f1. (CVE-2023-6932)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-6605-1

Plugin Details

Severity: High

ID: 189614

File Name: ubuntu_USN-6605-1.nasl

Version: 1.1

Type: local

Agent: unix

Published: 1/25/2024

Updated: 2/2/2024

Supported Sensors: Agentless 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: 6.8

Temporal Score: 5.3

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

CVSS Score Source: CVE-2023-6040

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:esm, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1029-iot, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1036-xilinx-zynqmp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1064-ibm, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1077-bluefield, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1084-gkeop, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1101-raspi, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1116-oracle, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1117-aws, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1121-gcp, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-1122-azure, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-170-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-170-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-5.4.0-170-lowlatency

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/25/2024

Vulnerability Publication Date: 12/8/2023

Reference Information

CVE: CVE-2023-6040, CVE-2023-6606, CVE-2023-6931, CVE-2023-6932

USN: 6605-1