CVE-2018-19044
Public on 2018-11-08
Modified on 2020-08-12
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.
Severity
Medium
CVSS v3 Base Score
See breakdown
Affected Packages
| Platform | Package | Release Date | Advisory | Status |
|---|---|---|---|---|
| Amazon Linux 1 | keepalived | 2020-08-10 | ALAS-2020-1414 | Fixed |
| Amazon Linux 2 - Core | keepalived | 2019-10-21 | ALAS2-2019-1323 | Fixed |
CVSS Scores
| Score Type | Score | Vector | |
|---|---|---|---|
| Amazon Linux | CVSSv3 | 7.0 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | CVSSv2 | 3.3 | AV:L/AC:M/Au:N/C:N/I:P/A:P |
| NVD | CVSSv3 | 4.7 | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |