CVE-2017-13720 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 fo...
HighCVSS 7.1
EPSS 0.44%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libxfont(Debian:12) | < 1:2.0.1-4 | 1:2.0.1-4 |
| debian/libxfont(Debian:13) | < 1:2.0.1-4 | 1:2.0.1-4 |
| debian/libxfont(Debian:14) | < 1:2.0.1-4 | 1:2.0.1-4 |
| x.org libxfont | <= 1.5.2 | No fix listed |
| x.org libxfont | = 2.0.0 | No fix listed |
| x.org libxfont | = 2.0.1 | No fix listed |
References
- Debian Security Tracker CVE-2017-13720 vendor-advisory
- DSA-3995 vendor-advisory
- bugzilla.redhat.com issue-tracking third-party-advisory
- bugzilla.suse.com issue-tracking third-party-advisory
- cgit.freedesktop.org patch third-party-advisory
- GLSA-201711-08 vendor-advisory
- www.x.org vendor-advisory