CVE-2017-13720
7.1 · HIGHOverview
CVE-2017-13720 is a high-severity vulnerability affecting x.org libxfont. It was published on October 11, 2017 and has a CVSS 3.0 base score of 7.1 (HIGH).
This vulnerability has a CVSS 3.0 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from x.org. Update libxfont to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| x.org | libxfont | 0 | Affected |
References
Frequently Asked Questions
What is CVE-2017-13720?
CVE-2017-13720 is a high-severity vulnerability affecting x.org libxfont. It was published on October 11, 2017 and has a CVSS 3.0 base score of 7.1 (HIGH).
How severe is CVE-2017-13720?
This vulnerability has a CVSS 3.0 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2017-13720?
Check the references section for vendor advisories and patches from x.org. Update libxfont to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2017-13720?
CyberStrike's AI-powered security agents can automatically detect CVE-2017-13720 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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