CVE-2018-19044
First published: Thu Nov 08 2018(Updated: )
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.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Keepalived Keepalived | =2.0.8 | |
| redhat/keepalived | <2.0.9 | 2.0.9 |
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Reference Links
- 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
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1651864
- https://access.redhat.com/support/policy/updates/errata/
- https://access.redhat.com/security/cve/cve-2018-19044
- https://bugzilla.redhat.com/show_bug.cgi?id=1651863
Frequently Asked Questions
What is CVE-2018-19044?
CVE-2018-19044 is a vulnerability in keepalived 2.0.8 that allows local users to overwrite arbitrary files if fs.protected_symlinks is set to 0.
What is the severity of CVE-2018-19044?
The severity of CVE-2018-19044 is medium, with a severity value of 4.7.
How does CVE-2018-19044 affect the software?
CVE-2018-19044 affects Keepalived 2.0.8.
How can I fix CVE-2018-19044?
You can fix CVE-2018-19044 by upgrading to Keepalived 2.0.9 or a newer version.
Where can I find more information about CVE-2018-19044?
You can find more information about CVE-2018-19044 at the following references: [Red Hat Advisory](https://access.redhat.com/errata/RHSA-2019:2285), [Bugzilla](https://bugzilla.suse.com/show_bug.cgi?id=1015141), [GitHub commit](https://github.com/acassen/keepalived/commit/04f2d32871bb3b11d7dc024039952f2fe2750306).
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