Ubuntu 18.04 LTS / 20.04 LTS / 21.04 : WebKitGTK vulnerabilities (USN-5024-1)

high Nessus Plugin ID 152135

Synopsis

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

Description

The remote Ubuntu 18.04 LTS / 20.04 LTS / 21.04 host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5024-1 advisory.

- A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. In order to trigger the vulnerability, a victim must be tricked into visiting a malicious webpage. (CVE-2021-21775)

- A use-after-free vulnerability exists in the way Webkits GraphicsContext handles certain events in WebKitGTK 2.30.4. A specially crafted web page can lead to a potential information leak and further memory corruption. A victim must be tricked into visiting a malicious web page to trigger this vulnerability.
(CVE-2021-21779)

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-5024-1

Plugin Details

Severity: High

ID: 152135

File Name: ubuntu_USN-5024-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 7/28/2021

Updated: 1/20/2022

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

Risk Information

VPR

Risk Factor: High

Score: 8.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 8.1

Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: E:H/RL:OF/RC:C

CVSS Score Source: CVE-2021-30799

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.4

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

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:20.04:-:lts, cpe:/o:canonical:ubuntu_linux:21.04, p-cpe:/a:canonical:ubuntu_linux:gir1.2-javascriptcoregtk-4.0, p-cpe:/a:canonical:ubuntu_linux:gir1.2-webkit2-4.0, p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-18, p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-bin, p-cpe:/a:canonical:ubuntu_linux:libjavascriptcoregtk-4.0-dev, p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37, p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-37-gtk2, p-cpe:/a:canonical:ubuntu_linux:libwebkit2gtk-4.0-dev, p-cpe:/a:canonical:ubuntu_linux:webkit2gtk-driver

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: 7/28/2021

Vulnerability Publication Date: 4/29/2021

CISA Known Exploited Dates: 11/17/2021

Reference Information

CVE: CVE-2021-21775, CVE-2021-21779, CVE-2021-30663, CVE-2021-30665, CVE-2021-30689, CVE-2021-30720, CVE-2021-30734, CVE-2021-30744, CVE-2021-30749, CVE-2021-30758, CVE-2021-30795, CVE-2021-30797, CVE-2021-30799

USN: 5024-1