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CVE-2021-21779

nvd nist
Published: Jul 8, 2021Modified: Nov 21, 2024

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8.8
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploitability: 2.8 / Impact: 5.9
Source: NVD

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.

Affected (4)

Webkitgtk
1 product
Webkitgtk
Fedoraproject
1 product
Fedora
Debian
1 product
Debian Linux
Configuration A
1 vulnerable
Vulnerable SoftwareAffected Versions
Webkitgtk
Version 2.30.4
Configuration B
2 vulnerable
Vulnerable SoftwareAffected Versions
Fedoraproject
Fedora
Version 33
Fedora
Version 34
Configuration C
1 vulnerable
Vulnerable SoftwareAffected Versions
Debian Linux
Version 10.0

Related CWEs

CWE-416
Use After Free
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (10)

Source: talos-cna@cisco.com
Mailing List
Source: talos-cna@cisco.com
Source: talos-cna@cisco.com
Source: talos-cna@cisco.com
ExploitThird Party Advisory
Source: talos-cna@cisco.com
Third Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Mailing List
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
Source: af854a3a-2127-422b-91ae-364da2661108
ExploitThird Party Advisory
Source: af854a3a-2127-422b-91ae-364da2661108
Third Party Advisory

Timeline

No history available yet.