Vulnerability identifier: #VU9524

Vulnerability risk: Low

CVSSv3.1: 2.9 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-16611

CWE-ID: CWE-264

Exploitation vector: Local

Exploit availability: No

Vulnerable software:
libXfont
Universal components / Libraries / Libraries used by multiple products

Vendor: X.org

Description
The vulnerability allows a local attacker to gain elevated privileges on the target system.

The weakness exists due to improper privileges control. A local attacker can open (but not read) files on the system as root, triggering tape rewinds, watchdogs, or similar mechanisms that can be triggered by opening files.

Mitigation
Update to version 1.5.4 or 2.0.3.

Vulnerable software versions

libXfont: 1.1.0 - 2.0.2

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External links
http://marc.info/?l=freedesktop-xorg-announce&m=151188049718337&w=2
http://marc.info/?l=freedesktop-xorg-announce&m=151188044218304&w=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.