Privilege escalation in X.Org libX11
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-14363 |
| CWE-ID | CWE-415 |
| Exploitation vector | Local |
| Public exploit | N/A |
| Vulnerable software Subscribe |
libx11 Other software / Other software solutions |
| Vendor | xorg.freedesktop.org |
Security Bulletin
This security bulletin contains one low risk vulnerability.
1) Double Free
EUVDB-ID: #VU46027
Risk: Low
CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-14363
CWE-ID:
CWE-415 - Double Free
Exploit availability: No
DescriptionThe 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.
Install updates from vendor's website.
Vulnerable software versionslibx11: 1.6.0 - 1.6.11
External linkshttp://seclists.org/oss-sec/2020/q3/135
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.
