Link Following Affecting keepalived package, versions <0:1.3.5-16.el7
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-KEEPALIVED-1515098
- published26 Jul 2021
- disclosed8 Nov 2018
Introduced: 8 Nov 2018
CVE-2018-19044 (opens in a new tab)How to fix?
Upgrade RHEL:7 keepalived to version 0:1.3.5-16.el7 or higher.
This issue was patched in RHSA-2019:2285.
NVD Description
Note: Versions mentioned in the description apply only to the upstream keepalived package and not the keepalived package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
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.
References
- https://access.redhat.com/security/cve/CVE-2018-19044
- https://security.gentoo.org/glsa/201903-01
- https://bugzilla.suse.com/show_bug.cgi?id=1015141
- https://github.com/acassen/keepalived/commit/04f2d32871bb3b11d7dc024039952f2fe2750306
- https://github.com/acassen/keepalived/issues/1048
- https://access.redhat.com/errata/RHSA-2019:2285