Fedora 32 update for libX11

Published: 2020-08-26 | Updated: 2025-04-25

Risk	Low
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2020-14363 CVE-2020-14344
CWE-ID	CWE-415 CWE-190
Exploitation vector	Local
Public exploit	N/A
Vulnerable software	Fedora Operating systems & Components / Operating system libX11 Operating systems & Components / Operating system package or component
Vendor	Fedoraproject

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Double Free

EUVDB-ID: #VU46027

Risk: Low

CVSSv4.0: 5.9 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-14363

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to a boundary error when handling locales in LibX11. A local user can run a specially crafted program to trigger integer overflow and double free and execute arbitrary code on the system with elevated privileges.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 32

libX11: before 1.6.12-1.fc32

CPE2.3

External links

https://bodhi.fedoraproject.org/updates/FEDORA-2020-eba554b9d5

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.

2) Integer overflow

EUVDB-ID: #VU41865