What’s Vulnerable › Vulnerabilities

CVE-2023-24056

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2023-01-22 · updated 2026-06-17
• Weakness: CWE-787

Description

In pkgconf through 1.9.3, variable duplication can cause unbounded string expansion due to incorrect checks in libpkgconf/tuple.c:pkgconf_tuple_parse. For example, a .pc file containing a few hundred bytes can expand to one billion bytes.

Affected products

• Pkgconf: through 1.9.3

References

• https://gitea.treehouse.systems/ariadne/pkgconf/commit/628b2b2bafa5d3a2017193ddf375093e70666059
• https://github.com/pkgconf/pkgconf/tags
• https://nullprogram.com/blog/2023/01/18/
• https://gitea.treehouse.systems/ariadne/pkgconf/commit/628b2b2bafa5d3a2017193ddf375093e70666059
• https://github.com/pkgconf/pkgconf/tags
• https://nullprogram.com/blog/2023/01/18/

Get alerted when CVE-2023-24056 or the next vulnerability affects your stack