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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : Git vulnerability (USN-4761-1)

high Nessus Plugin ID 148010

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS host has packages installed that are affected by a vulnerability as referenced in the USN-4761-1 advisory.

 Matheus Tavares discovered that Git incorrectly handled delay-capable clean/smudge filters when being used on case-insensitive filesystems. A remote attacker could possibly use this issue to execute arbitrary code.

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

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-4761-1

Plugin Details

Severity: High

ID: 148010

File Name: ubuntu_USN-4761-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/23/2021

Updated: 8/28/2024

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 4.2

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

CVSS Score Source: CVE-2021-21300

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:git-el, p-cpe:/a:canonical:ubuntu_linux:git-all, cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:git-daemon-sysvinit, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:git, p-cpe:/a:canonical:ubuntu_linux:git-cvs, p-cpe:/a:canonical:ubuntu_linux:git-core, p-cpe:/a:canonical:ubuntu_linux:git-email, p-cpe:/a:canonical:ubuntu_linux:git-gui, p-cpe:/a:canonical:ubuntu_linux:git-daemon-run, p-cpe:/a:canonical:ubuntu_linux:git-svn, p-cpe:/a:canonical:ubuntu_linux:gitk, p-cpe:/a:canonical:ubuntu_linux:git-man, p-cpe:/a:canonical:ubuntu_linux:gitweb, p-cpe:/a:canonical:ubuntu_linux:git-arch, p-cpe:/a:canonical:ubuntu_linux:git-mediawiki

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: 3/9/2021

Vulnerability Publication Date: 3/9/2021

Exploitable With

Metasploit (Git LFS Clone Command Exec)

Reference Information

CVE: CVE-2021-21300

USN: 4761-1