An update for c-ares is now available for openEuler-22.03-LTS Security Advisory openeuler-security@openeuler.org openEuler security committee openEuler-SA-2023-1339 Final 1.0 1.0 2023-06-10 Initial 2023-06-10 2023-06-10 openEuler SA Tool V1.0 2023-06-10 c-ares security update An update for c-ares is now available for openEuler-22.03-LTS. This is c-ares, an asynchronous resolver library. It is intended for applications which need to perform DNS queries without blocking, or need to perform multiple Security Fix(es): 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.(CVE-2023-31147) An update for c-ares is now available for openEuler-22.03-LTS. openEuler Security has rated this update as having a security impact of medium. A Common Vunlnerability Scoring System(CVSS)base score,which gives a detailed severity rating, is available for each vulnerability from the CVElink(s) in the References section. Medium c-ares https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1339 https://www.openeuler.org/en/security/cve/detail.html?id=CVE-2023-31147 https://nvd.nist.gov/vuln/detail/CVE-2023-31147 openEuler-22.03-LTS c-ares-1.18.1-6.oe2203.aarch64.rpm c-ares-devel-1.18.1-6.oe2203.aarch64.rpm c-ares-debugsource-1.18.1-6.oe2203.aarch64.rpm c-ares-debuginfo-1.18.1-6.oe2203.aarch64.rpm c-ares-help-1.18.1-6.oe2203.noarch.rpm c-ares-1.18.1-6.oe2203.src.rpm c-ares-debuginfo-1.18.1-6.oe2203.x86_64.rpm c-ares-devel-1.18.1-6.oe2203.x86_64.rpm c-ares-1.18.1-6.oe2203.x86_64.rpm c-ares-debugsource-1.18.1-6.oe2203.x86_64.rpm 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. 2023-06-10 CVE-2023-31147 openEuler-22.03-LTS Medium 6.5 AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N c-ares security update 2023-06-10 https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2023-1339