CVE-2018-19044 Information

Description

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.

CVSS Vector

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N

Reference

https://access.redhat.com/errata/RHSA-2019:2285 https://bugzilla.suse.com/show_bug.cgi?id=1015141 https://github.com/acassen/keepalived/commit/04f2d32871bb3b11d7dc024039952f2fe2750306 https://github.com/acassen/keepalived/issues/1048 https://security.gentoo.org/glsa/201903-01

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

4.7