Vulnerability Report

CVE-2023-31124

Title: Insufficient Entropy in c-ares

Predictable Output

Proof Of Concept

No public PoC currently indexed for CVE-2023-31124.

CWE Category CWE-330
Published Date May 25, 2023
Modified Date Feb 13, 2025
Exploit Status Not Found
Score 3.7 CVSS v3.1
Exploit Probability (EPSS)
0.08%

Vulnerability Summary

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.

Impacted Vendors

D
daniel_stenberg 1
C
c-ares_project 1

Reference Links

https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4 https://lists.fedoraproject.org/archives/list/[email protected]/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/ https://lists.fedoraproject.org/archives/list/[email protected]/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/ https://security.gentoo.org/glsa/202310-09 https://github.com/c-ares/c-ares/releases/tag/cares-1_19_1 https://github.com/c-ares/c-ares/security/advisories/GHSA-54xr-f67r-4pc4 https://lists.fedoraproject.org/archives/list/[email protected]/message/B5Z5XFNXTNPTCBBVXFDNZQVLLIE6VRBY/ https://lists.fedoraproject.org/archives/list/[email protected]/message/UBFWILTA33LOSV23P44FGTQQIDRJHIY7/ https://security.gentoo.org/glsa/202310-09
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.7
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity LOW
3.7
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-31124 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected Stack

No specific products linked.