CVE-2023-31124

Name of the Vulnerable Software and Affected Versions c-ares versions prior to 1.19.1

Description The issue is related to the use of rand() as a fallback when CARES RANDOM FILE is not set, which can allow an attacker to exploit the lack of entropy by not using a Cryptographically Secure Pseudorandom Number Generator (CSPRNG). This can potentially impact the integrity of protected information. The issue is specifically observed when cross-compiling c-ares for aarch64 android using the autotools build system.

Recommendations For versions prior to 1.19.1, update to version 1.19.1 or later to resolve the issue. As a temporary workaround, consider disabling the use of rand() as a fallback until a patch is available. Restrict access to sensitive information to minimize the risk of exploitation. Avoid using the CARES RANDOM FILE fallback in the affected API endpoints until the issue is resolved.