CVE-2021-21779

HIGH | Platform: macOS | Changelog

CVE Details

Description

A use-after-free vulnerability exists in the way Webkit’s 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.

CVSS 3.1 Score

Metric	Value
Base Score	8.8 (HIGH)
Vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`

Weakness

CWE-416

References

Apple Security Advisory
NVD Entry
http://www.openwall.com/lists/oss-security/2021/07/23/1 (Mailing List)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/
https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238 (Exploit, Third Party Advisory)
https://www.debian.org/security/2021/dsa-4945 (Third Party Advisory)