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Ubuntu 21.10 : Open vSwitch vulnerability (USN-5242-1)

high Nessus Plugin ID 156915

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 21.10 host has packages installed that are affected by a vulnerability as referenced in the USN-5242-1 advisory.

 - A memory leak was found in Open vSwitch (OVS) during userspace IP fragmentation processing. An attacker could use this flaw to potentially exhaust available memory by keeping sending packet fragments.
 (CVE-2021-3905)

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://ubuntu.com/security/notices/USN-5242-1

Plugin Details

Severity: High

ID: 156915

File Name: ubuntu_USN-5242-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 1/20/2022

Updated: 7/12/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2021-3905

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:21.10, p-cpe:/a:canonical:ubuntu_linux:openvswitch-common, p-cpe:/a:canonical:ubuntu_linux:openvswitch-ipsec, p-cpe:/a:canonical:ubuntu_linux:openvswitch-pki, p-cpe:/a:canonical:ubuntu_linux:openvswitch-source, p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch, p-cpe:/a:canonical:ubuntu_linux:openvswitch-switch-dpdk, p-cpe:/a:canonical:ubuntu_linux:openvswitch-test, p-cpe:/a:canonical:ubuntu_linux:openvswitch-testcontroller, p-cpe:/a:canonical:ubuntu_linux:openvswitch-vtep, p-cpe:/a:canonical:ubuntu_linux:python3-openvswitch

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: 1/20/2022

Vulnerability Publication Date: 1/20/2022

Reference Information

CVE: CVE-2021-3905

USN: 5242-1