Vulnerability 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 Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Webkitgtk | Webkitgtk | 2.30.4 |
| Fedoraproject | Fedora | 33 |
| Debian | Debian Linux | 10.0 |
Related Weaknesses (CWE)
References
- http://www.openwall.com/lists/oss-security/2021/07/23/1Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238ExploitThird Party Advisory
- https://www.debian.org/security/2021/dsa-4945Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/07/23/1Mailing List
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://talosintelligence.com/vulnerability_reports/TALOS-2021-1238ExploitThird Party Advisory
- https://www.debian.org/security/2021/dsa-4945Third Party Advisory
FAQ
What is CVE-2021-21779?
CVE-2021-21779 is a vulnerability with a CVSS score of 8.8 (HIGH). 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 ...
How severe is CVE-2021-21779?
CVE-2021-21779 has been rated HIGH with a CVSS base score of 8.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-21779?
Check the references section above for vendor advisories and patch information. Affected products include: Webkitgtk Webkitgtk, Fedoraproject Fedora, Debian Debian Linux.