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Debian DSA-4945-1 : webkit2gtk - security update

high Nessus Plugin ID 152138

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Synopsis

The remote Debian host is missing one or more security-related updates.

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4945 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

Upgrade the webkit2gtk packages.

For the stable distribution (buster), these problems have been fixed in version 2.32.3-1~deb10u1.

See Also

https://security-tracker.debian.org/tracker/source-package/webkit2gtk

https://www.debian.org/security/2021/dsa-4945

https://security-tracker.debian.org/tracker/CVE-2021-21775

https://security-tracker.debian.org/tracker/CVE-2021-21779

https://security-tracker.debian.org/tracker/CVE-2021-30663

https://security-tracker.debian.org/tracker/CVE-2021-30665

https://security-tracker.debian.org/tracker/CVE-2021-30689

https://security-tracker.debian.org/tracker/CVE-2021-30720

https://security-tracker.debian.org/tracker/CVE-2021-30734

https://security-tracker.debian.org/tracker/CVE-2021-30744

https://security-tracker.debian.org/tracker/CVE-2021-30749

https://security-tracker.debian.org/tracker/CVE-2021-30758

https://security-tracker.debian.org/tracker/CVE-2021-30795

https://security-tracker.debian.org/tracker/CVE-2021-30797

https://security-tracker.debian.org/tracker/CVE-2021-30799

https://packages.debian.org/source/buster/webkit2gtk

Plugin Details

Severity: High

ID: 152138

File Name: debian_DSA-4945.nasl

Version: 1.6

Type: local

Agent: unix

Published: 7/29/2021

Updated: 4/25/2023

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

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.7

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

CVSS Score Source: CVE-2021-30799

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/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: p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-18, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37-gtk2, p-cpe:/a:debian:debian_linux:webkit2gtk-driver, p-cpe:/a:debian:debian_linux:gir1.2-webkit2-4.0, cpe:/o:debian:debian_linux:10.0, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-dev, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-doc, p-cpe:/a:debian:debian_linux:gir1.2-javascriptcoregtk-4.0, p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-bin, p-cpe:/a:debian:debian_linux:libjavascriptcoregtk-4.0-dev, p-cpe:/a:debian:debian_linux:libwebkit2gtk-4.0-37

Required KB Items: Host/local_checks_enabled, Host/Debian/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 Vulnerability Due 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