QID 750975

Date Published: 2021-09-21

QID 750975: SUSE Enterprise Linux Security Update for c-ares (SUSE-SU-2021:2760-1)

This update for c-ares fixes the following issues: version update to git snapshot 1.17.1+20200724: - cve-2021-3672: fixed missing input validation on hostnames returned by dns servers (bsc#1188881) - if ares_getaddrinfo() was terminated by an ares_destroy(), it would cause crash - crash in sortaddrinfo() if the list size equals 0 due to an unexpected dns response - expand number of escaped characters in dns replies as per rfc1035 5.1 to prevent spoofing - use unbuffered /dev/urandom for random data to prevent early startup performance issues

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Successful exploitation allows attacker to compromise the system.

  • CVSS V3 rated as Medium - 4.2 severity.
  • CVSS V2 rated as Medium - 5.4 severity.
    • Solution
    Upgrade to the latest package which contains the patch. To install this SUSE Security, Update use YaST online_update. Alternatively you can run the command listed for your product. To install packages using the command line interface, use command "yum update". Refer to Suse security advisory: SUSE-SU-2021:2760-1 to address this issue and obtain further details.
    Vendor References

    CVEs related to QID 750975

    CVE-2021-3672 |
    Software Advisories
    Advisory ID Software Component Link
    SUSE-SU-2021:2760-1 SUSE Enterprise Linux URL Logo lists.suse.com/pipermail/sle-security-updates/2021-August/009306.html
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