CVE-2019-12779
Published: 7 June 2019
libqb before 1.0.5 allows local users to overwrite arbitrary files via a symlink attack, because it uses predictable filenames (under /dev/shm and /tmp) without O_EXCL.
Notes
| Author | Note |
|---|---|
| mdeslaur | 1.0.4 is problematic, 1.0.5 was released to fix it. mitigated by symlink restrictions, low priority |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
libqb Launchpad, Ubuntu, Debian |
bionic |
Needed
|
| cosmic |
Ignored
(end of life)
|
|
| disco |
Ignored
(end of life)
|
|
| eoan |
Not vulnerable
(1.0.5-1)
|
|
| focal |
Not vulnerable
(1.0.5-1)
|
|
| groovy |
Not vulnerable
(1.0.5-1)
|
|
| hirsute |
Not vulnerable
(1.0.5-1)
|
|
| impish |
Not vulnerable
(1.0.5-1)
|
|
| jammy |
Not vulnerable
(1.0.5-1)
|
|
| kinetic |
Not vulnerable
(1.0.5-1)
|
|
| lunar |
Not vulnerable
(1.0.5-1)
|
|
| mantic |
Not vulnerable
(1.0.5-1)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(1.0.4-1)
|
|
| xenial |
Needed
|
|
|
Patches: upstream: https://github.com/ClusterLabs/libqb/commit/e322e98dc264bc5911d6fe1d371e55ac9f95a71e upstream: https://github.com/ClusterLabs/libqb/commit/7cd7b06d52ac80c343f362c7e39ef75495439dfc upstream: https://github.com/ClusterLabs/libqb/commit/6a4067c1d1764d93d255eccecfd8bf9f43cb0b4d upstream: https://github.com/ClusterLabs/libqb/commit/269a0ca00717d2f43f03be5f7b034d93fb33f473 upstream: https://github.com/ClusterLabs/libqb/commit/f950a5d3f8e07aa61bec3da91da01f06e762b138 upstream: https://github.com/ClusterLabs/libqb/commit/65d6fb37a28f3b41f2e73c49214a4c9e3533f15a upstream: https://github.com/ClusterLabs/libqb/commit/1699bf4e29a3ba42362c340520ed97efc313366d |
||
| 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 | 7.1 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | High |
| Availability impact | High |
| Vector | CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H |