#VU45684 Improper Initialization in xorg-server - CVE-2020-14347

Vulnerability identifier: #VU45684

Vulnerability risk: Low

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-14347

CWE-ID: CWE-665

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
xorg-server
Other software / Other software solutions

Vendor: xorg.freedesktop.org

Description

The vulnerability allows a local authenticated user to gain access to sensitive information.

A flaw was found in the way xserver memory was not properly initialized. This could leak parts of server memory to the X client. In cases where Xorg server runs with elevated privileges, this could result in possible ASLR bypass. Xorg-server before version 1.20.9 is vulnerable.

Mitigation
Install update from vendor's website.

Vulnerable software versions

xorg-server: 1.20.5 - 1.20.6

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External links
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-14347
https://lists.x.org/archives/xorg-announce/2020-July/003051.html
https://www.openwall.com/lists/oss-security/2020/07/31/2

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Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.