CVE-2021-21779

high

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.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238

http://www.openwall.com/lists/oss-security/2021/07/23/1

https://lists.fedoraproject.org/archives/list/[email protected]/message/V4QORERLPDN3UNNJFJSOMHZZCU2G75Q6/

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

https://lists.fedoraproject.org/archives/list/[email protected]/message/KYMMBQN4PRVDLMIJT2LY2BWHLYBD57P3/

Details

Source: MITRE

Published: 2021-07-08

Updated: 2022-04-28

Type: CWE-416

Risk Information

CVSS v2

Base Score: 6.8

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

Impact Score: 6.4

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 8.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 2.8

Severity: HIGH