Vulnerability Description
An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, result in arbitrary code execution. The highest threat from this flaw is to confidentiality, integrity as well as system availability.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| X.Org | Libx11 | < 1.6.12 |
| Fedoraproject | Fedora | 33 |
Related Weaknesses (CWE)
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363Issue TrackingThird Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txtThird Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.shExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.x.org/archives/xorg-announce/2020-August/003056.htmlVendor Advisory
- https://usn.ubuntu.com/4487-2/Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14363Issue TrackingThird Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/DFX11details.txtThird Party Advisory
- https://github.com/Ruia-ruia/Exploits/blob/master/x11doublefree.shExploitThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.x.org/archives/xorg-announce/2020-August/003056.htmlVendor Advisory
- https://usn.ubuntu.com/4487-2/Third Party Advisory
FAQ
What is CVE-2020-14363?
CVE-2020-14363 is a vulnerability with a CVSS score of 7.8 (HIGH). An integer overflow vulnerability leading to a double-free was found in libX11. This flaw allows a local privileged attacker to cause an application compiled with libX11 to crash, or in some cases, re...
How severe is CVE-2020-14363?
CVE-2020-14363 has been rated HIGH with a CVSS base score of 7.8/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-14363?
Check the references section above for vendor advisories and patch information. Affected products include: X.Org Libx11, Fedoraproject Fedora.