CVE-2023-31124

3.7 LOW 0.9% exploit odds Fix listed

What it is

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.

At a glance

Exploitability: Can be exploited over the network without logging in. Limited direct impact.
Exploit odds: 0.9% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2023-05-25 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 05:56 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.9% in the next 30 days (EPSS).
Severity: 3.7 LOW (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2023-05-25 22:15 UTC
Last modified: 2026-06-17 05:56 UTC
Exploit probability: 0.9% · EPSS, next 30 days
Weakness: CWE-330
Record status: Modified

Affected

c-ares Project c-ares < 1.19.1
Fedoraproject Fedora 37
Fedoraproject Fedora 38

Attack profile CVSS 3.1 · 3.7

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: Low
Availability: None

Raw vector

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

Is it in your code?

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Read https://cve-list.com/agent/cve/CVE-2023-31124.md and follow it. Check whether this project is affected by CVE-2023-31124. Read only. Don't change anything and don't upload my code. Tell me yes, no or not sure, with the file as proof.

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Fix and advisories

References

NVD record · CVE.org record