CVE-2020-14360: Buffer Overflow
First published: Mon Aug 17 2020(Updated: )
X.Org xserver could allow a remote authenticated attacker to gain elevated privileges on the system, caused by insufficient checks on the lengths of the XkbSetMap request. By sending a specially-crafted request, an attacker could exploit this vulnerability to gain out-of-bounds memory access in the X server and escalate privileges.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/xorg-x11-server | <1.20.10 | 1.20.10 |
| IBM Cloud Pak for Security (CP4S) | <=1.7.2.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.1.0 | |
| IBM Cloud Pak for Security (CP4S) | <=1.7.0.0 | |
| X.Org X Server | <1.20.10 |
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Reference Links
- https://access.redhat.com/security/cve/CVE-2020-14345
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1903258
- https://lists.x.org/archives/xorg-announce/2020-December/003066.html
- https://gitlab.freedesktop.org/xorg/xserver/-/commit/446ff2d3177087b8173fa779fa5b77a2a128988b
- https://access.redhat.com/errata/RHSA-2020:5408
- https://access.redhat.com/security/cve/cve-2020-14360
- https://access.redhat.com/errata/RHSA-2021:1804
- https://bugzilla.redhat.com/show_bug.cgi?id=1869139
- https://exchange.xforce.ibmcloud.com/vulnerabilities/192532
- https://www.ibm.com/support/pages/node/6493729 (Advisory)
Frequently Asked Questions
What is CVE-2020-14360?
CVE-2020-14360 is a vulnerability found in the X.Org Server before version 1.20.10 that allows a remote authenticated attacker to gain elevated privileges on the system.
How does CVE-2020-14360 affect X.Org xserver?
CVE-2020-14360 affects X.Org xserver by allowing a remote authenticated attacker to gain out-of-bounds memory access in the XkbSetMap request.
How severe is CVE-2020-14360?
CVE-2020-14360 has a severity rating of high with a CVSS score of 8.8.
Which software versions are affected by CVE-2020-14360?
The X.Org Server versions before 1.20.10 are affected by CVE-2020-14360.
How can I fix CVE-2020-14360?
To fix CVE-2020-14360, it is recommended to update X.Org xserver to version 1.20.10 or higher.
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