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