CVE-2021-21775 — Use After Free in Webkitgtk

CWE-416 — Use After Free6 documents6 sources
Severity
8.0HIGHNVD
EPSS
0.6%
top 29.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
Debian Webkit2gtkDebian WpewebkitDebian Linux+2 more
Timeline
PublishedJul 7
Latest updateMay 24

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:HExploitability: 2.1 | Impact: 5.9

Affected Packages3 packages

▶debiandebian/wpewebkit< webkit2gtk 2.32.3-1 (bookworm)
▶debiandebian/webkit2gtk< webkit2gtk 2.32.3-1 (bookworm)

Also affects: Debian Linux 10.0, Fedora 33, 34

🔴Vulnerability Details

2
GHSA
GHSA-ghh6-x87m-6qjh: A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2↗2022-05-24
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OSV
CVE-2021-21775: A use-after-free vulnerability exists in the way certain events are processed for ImageLoader objects of Webkit WebKitGTK 2↗2021-07-07
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📋Vendor Advisories

3
Ubuntu
WebKitGTK vulnerabilities↗2021-07-28
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Red Hat
webkitgtk: Use-after-free in ImageLoader dispatchPendingErrorEvent leading to information leak and possibly code execution↗2021-07-28
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Debian
CVE-2021-21775: webkit2gtk - A use-after-free vulnerability exists in the way certain events are processed fo...↗2021
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