CVE-2018-19044
Published: 8 November 2018
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.
Notes
Author | Note |
---|---|
mdeslaur | xenial and earlier don't have dbus support |
Priority
Status
Package | Release | Status |
---|---|---|
keepalived Launchpad, Ubuntu, Debian |
bionic |
Needed
|
cosmic |
Ignored
(end of life)
|
|
disco |
Not vulnerable
(1:2.0.10-1)
|
|
eoan |
Not vulnerable
(1:2.0.10-1)
|
|
focal |
Not vulnerable
(1:2.0.10-1)
|
|
groovy |
Not vulnerable
(1:2.0.10-1)
|
|
hirsute |
Not vulnerable
(1:2.0.10-1)
|
|
impish |
Not vulnerable
(1:2.0.10-1)
|
|
jammy |
Not vulnerable
(1:2.0.10-1)
|
|
kinetic |
Not vulnerable
(1:2.0.10-1)
|
|
lunar |
Not vulnerable
(1:2.0.10-1)
|
|
mantic |
Not vulnerable
(1:2.0.10-1)
|
|
trusty |
Not vulnerable
(code not present)
|
|
upstream |
Released
(2.0.9)
|
|
xenial |
Not vulnerable
(code not present)
|
|
Patches: upstream: https://github.com/acassen/keepalived/commit/04f2d32871bb3b11d7dc024039952f2fe2750306 |
||
This vulnerability is mitigated in part by the use of symlink restrictions in Ubuntu. This vulnerability is mitigated in part by the use of hardlink restrictions in Ubuntu. |
Severity score breakdown
Parameter | Value |
---|---|
Base score | 4.7 |
Attack vector | Local |
Attack complexity | High |
Privileges required | Low |
User interaction | None |
Scope | Unchanged |
Confidentiality | None |
Integrity impact | High |
Availability impact | None |
Vector | CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N |