CVE-2017-13720
libxfont - security update
7.1
HIGH
CVSS 3.1
EPSS 0.06%
Description
In the PatternMatch function in fontfile/fontdir.c in libXfont through 1.5.2 and 2.x before 2.0.2, an attacker with access to an X connection can cause a buffer over-read during pattern matching of fonts, leading to information disclosure or a crash (denial of service). This occurs because '\0' characters are incorrectly skipped in situations involving ? characters.
How to fix CVE-2017-13720
To remediate CVE-2017-13720, upgrade the affected package to a fixed version below.
- —upgrade to 1:2.0.1-4 or later
- —upgrade to 1:1.4.5-5+deb7u1 or later
- —upgrade to 1:1.5.1-1+deb8u1 or later
Is CVE-2017-13720 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (3)
- from 0, < 1:2.0.1-4
- from 0, < 1:1.4.5-5+deb7u1
- from 0, < 1:1.5.1-1+deb8u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.1 | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H |