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Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS : GLib vulnerability (USN-4764-1)

medium Nessus Plugin ID 147989

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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 / 20.10 host has packages installed that are affected by a vulnerability as referenced in the USN-4764-1 advisory.

 - An issue was discovered in GNOME GLib before 2.66.8. When g_file_replace() is used with G_FILE_CREATE_REPLACE_DESTINATION to replace a path that is a dangling symlink, it incorrectly also creates the target of the symlink as an empty file, which could conceivably have security relevance if the symlink is attacker-controlled. (If the path is a symlink to a file that already exists, then the contents of that file correctly remain unchanged.) (CVE-2021-28153)

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-4764-1

Plugin Details

Severity: Medium

ID: 147989

File Name: ubuntu_USN-4764-1.nasl

Version: 1.5

Type: local

Agent: unix

Published: 3/23/2021

Updated: 10/16/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 2.2

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.9

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

CVSS Score Source: CVE-2021-28153

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.8

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-0, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-0-refdbg, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-bin, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-data, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-dev, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-dev-bin, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-tests, p-cpe:/a:canonical:ubuntu_linux:libglib2.0-udeb

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: 3/15/2021

Vulnerability Publication Date: 3/11/2021

Reference Information

CVE: CVE-2021-28153

USN: 4764-1