CVE-2020-1712

CVSS 7.8 HIGHEPSS 0.5%CWE-416

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.5%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

31 Mar 2020Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

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

Affected products

[UNKNOWN] · systemd

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References

https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712 https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54 https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2 https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html https://www.openwall.com/lists/oss-security/2020/02/05/1