Amazon Linux 1 Security Advisory: ALAS-2021-1545
Advisory Release Date: 2021-10-29 16:37 Pacific
Advisory Updated Date: 2021-11-04 18:54 Pacific
A flaw was found in c-ares library, where a missing input validation check of host names returned by DNS (Domain Name Servers) can lead to output of wrong hostnames which might potentially lead to Domain Hijacking. The highest threat from this vulnerability is to confidentiality and integrity as well as system availability. (CVE-2021-3672)
Affected Packages:
c-ares
Issue Correction:
Run yum update c-ares to update your system.
i686:
c-ares-debuginfo-1.17.2-1.8.amzn1.i686
c-ares-devel-1.17.2-1.8.amzn1.i686
c-ares-1.17.2-1.8.amzn1.i686
src:
c-ares-1.17.2-1.8.amzn1.src
x86_64:
c-ares-devel-1.17.2-1.8.amzn1.x86_64
c-ares-1.17.2-1.8.amzn1.x86_64
c-ares-debuginfo-1.17.2-1.8.amzn1.x86_64