Medium severity · published Nov 8, 2018
CVE-2018-19044
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
4.7
CVSS
0.5%
EPSS
No
On KEV
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
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Keepalived · Keepalived
2.0.8 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-19044
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-19044
access.redhat.com
https://access.redhat.com/errata/RHSA-2019:2285
Issue Tracking
https://bugzilla.suse.com/show_bug.cgi?id=1015141
Patch
https://github.com/acassen/keepalived/commit/04f2d32871bb3b11d7dc024039952f2fe2750306
Exploit
https://github.com/acassen/keepalived/issues/1048
Third Party Advisory
https://security.gentoo.org/glsa/201903-01
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