Vulnerability CVE-2020-1712: Information
Description
A heap use-after-free vulnerability was found in systemd before version v245-rc1, where asynchronous Polkit queries are performed while handling dbus messages. A local unprivileged attacker can abuse this flaw to crash systemd services or potentially execute code and elevate their privileges, by sending specially crafted dbus messages.
Severity: HIGH (7.8) Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| systemd | sisyphus | 244.1-alt1 | 255.6-alt2 | ALT-PU-2019-3351-1 | 243289 | Fixed |
| systemd | p10 | 244.1-alt1 | 249.17-alt2 | ALT-PU-2019-3351-1 | 243289 | Fixed |
| systemd | p9 | 243.7-alt1 | 247.13-alt1 | ALT-PU-2020-1301-1 | 246412 | Fixed |
| systemd | p8 | 239-alt5 | 239-alt6 | ALT-PU-2020-1403-1 | 246796 | Fixed |
| systemd | c10f1 | 244.1-alt1 | 249.17-alt2 | ALT-PU-2019-3351-1 | 243289 | Fixed |
| systemd | c9f2 | 246.13-alt1 | 246.14-alt1 | ALT-PU-2021-1950-1 | 273334 | Fixed |
| systemd | p11 | 244.1-alt1 | 255.6-alt2 | ALT-PU-2019-3351-1 | 243289 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 |
|
| https://www.openwall.com/lists/oss-security/2020/02/05/1 |
|
| https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 |
|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 |
|
| https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb |
|
| https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d |
|
| [debian-lts-announce] 20220630 [SECURITY] [DLA 3063-1] systemd security update |
|