CVE-2020-35512
Published: 15 February 2021
A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors
Priority
CVSS 3 base score: 7.8
Status
| Package | Release | Status |
|---|---|---|
|
dbus Launchpad, Ubuntu, Debian |
bionic |
Released
(1.12.2-1ubuntu1.3)
|
| focal |
Released
(1.12.16-2ubuntu2.2)
|
|
| groovy |
Not vulnerable
(1.12.20-1ubuntu1)
|
|
| hirsute |
Not vulnerable
|
|
| impish |
Not vulnerable
|
|
| jammy |
Not vulnerable
|
|
| kinetic |
Not vulnerable
|
|
| precise |
Ignored
(end of ESM support, was needed)
|
|
| trusty |
Needed
|
|
| upstream |
Released
(1.12.20-1)
|
|
| xenial |
Released
(1.10.6-1ubuntu3.6+esm1)
|
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-35512
- https://bugzilla.redhat.com/show_bug.cgi?id=1909101
- https://gitlab.freedesktop.org/dbus/dbus/-/issues/305
- https://gitlab.freedesktop.org/dbus/dbus/-/commit/2b7948ef907669e844b52c4fa2268d6e3162a70c (dbus-1.13.18)
- https://gitlab.freedesktop.org/dbus/dbus/-/commit/f3b2574f0c9faa32a59efec905921f7ef4438a60 (dbus-1.12.20)
- https://gitlab.freedesktop.org/dbus/dbus/-/commit/dc94fe3d31adf72259adc31f343537151a6c0bdd (dbus-1.10.32)
- https://ubuntu.com/security/notices/USN-5244-1
- https://ubuntu.com/security/notices/USN-5244-2
- NVD
- Launchpad
- Debian