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Gentoo Linux: CVE-2023-31147: c-ares: Multiple Vulnerabilities

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Gentoo Linux: CVE-2023-31147: c-ares: Multiple Vulnerabilities

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
05/25/2023
Created
10/11/2023
Added
10/10/2023
Modified
10/10/2023

Description

c-ares is an asynchronous resolver library. When /dev/urandom or RtlGenRandom() are unavailable, c-ares uses rand() to generate random numbers used for DNS query ids. This is not a CSPRNG, and it is also not seeded by srand() so will generate predictable output. Input from the random number generator is fed into a non-compilant RC4 implementation and may not be as strong as the original RC4 implementation. No attempt is made to look for modern OS-provided CSPRNGs like arc4random() that is widely available. This issue has been fixed in version 1.19.1.

Solution(s)

  • gentoo-linux-upgrade-net-dns-c-ares

References

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