ALAS-2021-1545


Amazon Linux AMI Security Advisory: ALAS-2021-1545
Advisory Release Date: 2021-10-29 16:37 Pacific
Advisory Updated Date: 2021-11-04 18:54 Pacific
Severity: Medium
References: CVE-2021-3672 

Issue Overview:

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.

New Packages:
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