Vulnerability in C-Ares
CVE-2023-31124
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 3.7 (Low). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.009 (59.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 59.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: -0.000
Affected products
- C-Ares — versions < 1.19.1
- C-Ares Project
- Fedoraproject Fedora — versions 37, 38
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4 (Third Party Advisory)
- github.com/c-ares/c-ares/releases/tag/cares-1_19_1 (Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202310-09 (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-31124?
- CVE-2023-31124 is a low-severity vulnerability in C-Ares, classified under Use of Insufficiently Random Values. CVSS score: 3.7/10. Published 2023-05-25.
- How severe is CVE-2023-31124?
- Low severity. CVSS v3 base score is 3.7 out of 10.
- Is CVE-2023-31124 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.