CVE-2020-1712

 

Published at: - 31-03-2020 07:15

Last modified: - 30-06-2022 07:15

Total changes: - 5

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.

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

 

Verification logic

 

Reference

• 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-

 

Keywords

NVD

 

CVE-2020-1712

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures