Home/CVE/c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RAND
CVE

CVE-2023-31124

c-ares is an asynchronous resolver library. When cross-compiling c-ares and using the autotools build system, CARES_RAND

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.

LOW · CVSS 3.7 EPSS 0.00083
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-330Use of Insufficiently Random Values
CWE-330Use of Insufficiently Random Values
▤

Affected Products & Versions

2
c-ares project c-ares< 1.19.1
fedoraproject fedoraall versions
▣

Scoring & Timeline

3.7
LOW · CVSS v3.1 · security-advisories@github.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD25 May 2023 · 10:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
SSVC triage · cisa-vulnrichment
Exploitation
none
Automatable
no
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

21
suse-csafopenSUSE-SU-2024:12951-1
siemens-csafSSA-943925
siemens-csafSSA-806742
suse-csafSUSE-SU-2023:2861-1
suse-csafSUSE-SU-2023:2669-1
🔗

References & Sources

5
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1Third Party Advisory
https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/Mailing ListThird Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/Mailing ListThird Party Advisory
https://security.gentoo.org/glsa/202310-09Third Party Advisory
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