Recommended update for c-ares

Announcement ID: SUSE-RU-2021:3022-2
Rating: important
References:
Affected Products:
  • SUSE Linux Enterprise Micro 5.1

An update that has one fix can now be installed.

Description:

This update for c-ares fixes the following issue:

  • Allow '_' as part of DNS response. (bsc#1190225)
  • 'c-ares' 1.17.2 introduced response validation to prevent a security issue, however it was not listing '_' as a valid character for domain name responses which caused issues when a 'CNAME' referenced a 'SRV' record which contained underscores.

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Micro 5.1
    zypper in -t patch SUSE-SUSE-MicroOS-5.1-2021-3022=1

Package List:

  • SUSE Linux Enterprise Micro 5.1 (aarch64 s390x x86_64)
    • libcares2-1.17.1+20200724-3.17.1
    • c-ares-debugsource-1.17.1+20200724-3.17.1
    • libcares2-debuginfo-1.17.1+20200724-3.17.1

References: