PT-2021-5827 · Webkitgtk+10 · Webkitgtk+10

Marcin Towalski · Published 2021-02-12 · Updated 2022-07-21 · CVE-2021-21779

Positive Technologies (AI Summary)

CVSS v3.1

6.8

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions WebKitGTK version 2.30.4

Description A use-after-free vulnerability exists in the way Webkit’s GraphicsContext handles certain events. This can lead to a potential information leak and further memory corruption when a victim visits a specially crafted web page. The vulnerability can be exploited by a remote attacker to access confidential data, compromise data integrity, and cause a denial of service.

Recommendations For WebKitGTK version 2.30.4, update to a version with improved memory management to address the use-after-free issue. As a temporary workaround, consider restricting access to potentially malicious web pages to minimize the risk of exploitation.

Exploit

Fix

Use After Free

Weakness Enumeration

CWE-416

Related Identifiers

ALSA-2021:4381

ALT-PU-2021-1311

BDU:2022-00324

CESA-2021_4381

CVE-2021-21779

DSA-4945-1

MGASA-2021-0400

OPENSUSE-SU-2021:1101-1

OPENSUSE-SU-2021:2598-1

OPENSUSE-SU-2021_1101-1

OPENSUSE-SU-2021_2598-1

RHSA-2021:4381

RHSA-2021_4381

RHSA-2025:10364

RLSA-2021:4381

SUSE-SU-2021:2598-1

SUSE-SU-2021:2600-1

SUSE-SU-2021:2762-1

USN-5024-1

Affected Products

Alt Linux

Almalinux

Astra Linux

Centos

Linuxmint

Apple Macos

Red Hat

Rocky Linux

Suse

Ubuntu

Webkitgtk

References · 171

• 🔥 https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238 · Exploit
• https://osv.dev/vulnerability/DEBIAN-CVE-2021-21779 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21775 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30720 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4945-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-5024-1 · Vendor Advisory
• https://debian.org/security/2021/dsa-4945 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-21779 · Vendor Advisory
• https://ubuntu.com/security/CVE-2021-30665 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2598-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2021:2762-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2021-21779 · Security Note
• https://bdu.fstec.ru/vul/2022-00324 · Security Note
• https://wiki.astralinux.ru/astra-linux-se47-bulletin-2022-0114SE47 · Vendor Advisory
• https://errata.almalinux.org/8/ALSA-2021-4381.html · Vendor Advisory