Debian Security Bug TrackerDEBIANCVE:CVE-2023-31147CVE-2023-31147
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
46.1%
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.
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| Debian | 12 | all | c-ares | <= 1.18.1-3 | c-ares_1.18.1-3_all.deb |
| Debian | 11 | all | c-ares | <= 1.17.1-1+deb11u3 | c-ares_1.17.1-1+deb11u3_all.deb |
| Debian | 999 | all | c-ares | < 1.19.1-2 | c-ares_1.19.1-2_all.deb |
| Debian | 13 | all | c-ares | < 1.19.1-2 | c-ares_1.19.1-2_all.deb |
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
EPSS
Percentile
46.1%