X.org X11 Server up to 1.20.8 integer overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in X.org X11 Server up to 1.20.8. This issue affects some unknown processing. Performing a manipulation results in integer overflow. This vulnerability was named CVE-2020-14361. The attack needs to be approached locally. There is no available exploit. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in X.org X11 Server up to 1.20.8 (Windowing System Software). This affects an unknown functionality. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A flaw was found in X.Org Server before xorg-x11-server 1.20.9. An Integer underflow leading to heap-buffer overflow may lead to a privilege escalation vulnerability. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

The weakness was presented 09/15/2020 as Bug 1869142 as not defined bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. This vulnerability is uniquely identified as CVE-2020-14361 since 06/17/2020. An attack has to be approached locally. The successful exploitation needs a authentication. Neither technical details nor an exploit are publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236625 (Alibaba Cloud Linux 3 : 0114: userspace graphics, xorg-x11, and mesa (ALINUX3-SA-2022:0114)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.20.9 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (236625). See VDB-161254, VDB-161252 and VDB-161251 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Windowing System Software

Vendor

• X.org

Name

• X11 Server

Version

• 1.20.0
• 1.20.1
• 1.20.2
• 1.20.3
• 1.20.4
• 1.20.5
• 1.20.6
• 1.20.7
• 1.20.8

License

• open-source

Website

• Vendor: https://www.x.org/

CPE 2.3info

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CPE 2.2info

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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