CVE-2023-31124 - CVE House
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Status published Low CVE-2023-31124

AutoTools does not set CARES_RANDOM_FILE during cross compilation

Vulnerability Description

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.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

No credits recorded in the NVD database.

References

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c-ares has a Use After Free vulnerability when connection is cleaned up after error
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CVE-2025-31498
c-ares has a use-after-free in read_answers()
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CVE-2024-25629
c-ares out of bounds read in ares__read_line()
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CVE-2023-32067
0-byte UDP payload DoS in c-ares
High 7.5
CVE-2023-31147
Insufficient randomness in generation of DNS query IDs in c-ares
Medium 5.9

Affected Vendor

Affected Software

c-ares
Vulnerable Versions:
< 1.19.1

Timeline

Official Publish: May 25th, 2023
Last Modified: February 13th, 2025
Added to House: July 22nd, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

CWE-330

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.