CVE-2021-21806 — Use After Free in Webkitgtk

CWE-416 — Use After Free5 documents5 sources
Severity
8.8HIGHNVD
EPSS
2.1%
top 16.02%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
3
Debian Webkit2gtkDebian WpewebkitWebkitgtk
Timeline
PublishedJul 8
Latest updateMay 24

Description

An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2.30.3 x64. A specially crafted HTML web page can cause a use-after-free condition, resulting in remote code execution. The victim needs to visit a malicious web site to trigger the vulnerability.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:HExploitability: 2.8 | Impact: 5.9

Affected Packages3 packages

▶debiandebian/wpewebkit< webkit2gtk 2.30.6-1 (bookworm)
▶debiandebian/webkit2gtk< webkit2gtk 2.30.6-1 (bookworm)

🔴Vulnerability Details

2
GHSA
GHSA-x2v5-56r3-vrw9: An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2↗2022-05-24
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OSV
CVE-2021-21806: An exploitable use-after-free vulnerability exists in WebKitGTK browser version 2↗2021-07-08
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📋Vendor Advisories

2
Red Hat
webkitgtk: Use-after-free in fireEventListeners leading to arbitrary code execution↗2021-07-08
▶
Debian
CVE-2021-21806: webkit2gtk - An exploitable use-after-free vulnerability exists in WebKitGTK browser version ...↗2021
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