ALAS2-2019-1323


Amazon Linux 2 Security Advisory: ALAS-2019-1323
Advisory Release Date: 2019-10-21 18:01 Pacific
Advisory Updated Date: 2019-10-23 23:46 Pacific
Severity: Medium

Issue Overview:

keepalived 2.0.8 didn't check for pathnames with symlinks when writing data to a temporary file upon a call to PrintData or PrintStats. This allowed local users to overwrite arbitrary files if fs.protected_symlinks is set to 0, as demonstrated by a symlink from /tmp/keepalived.data or /tmp/keepalived.stats to /etc/passwd.(CVE-2018-19044)


Affected Packages:

keepalived


Note:

This advisory is applicable to Amazon Linux 2 (AL2) Core repository. Visit this FAQ section for the difference between AL2 Core and AL2 Extras advisories.


Issue Correction:
Run yum update keepalived to update your system.

New Packages:
aarch64:
    keepalived-1.3.5-16.amzn2.aarch64
    keepalived-debuginfo-1.3.5-16.amzn2.aarch64

i686:
    keepalived-1.3.5-16.amzn2.i686
    keepalived-debuginfo-1.3.5-16.amzn2.i686

src:
    keepalived-1.3.5-16.amzn2.src

x86_64:
    keepalived-1.3.5-16.amzn2.x86_64
    keepalived-debuginfo-1.3.5-16.amzn2.x86_64