CVE-2023-31124

Summary

c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RANDOM_FILE will not be set, as seen when cross compiling aarch64 android. This will downgrade to using rand() as a fallback which could allow an attacker to take advantage of the lack of entropy by not using a CSPRNG. This issue was patched in version 1.19.1.

Affected Software

Weaknesses

• CWE-330: CWE-330: Use of Insufficiently Random Values

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4
• https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/
• https://security.gentoo.org/glsa/202310-09

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4
• https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/
• https://security.gentoo.org/glsa/202310-09

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