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CVE-2020-1712

Date: March 31, 2020

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.

Language: C

Severity Score

Related Resources (12)

https://access.redhat.com/security/cve/CVE-2020-1712
https://github.com/systemd/systemd/commit/1068447e6954dc6ce52f099ed174c442cb89ed54
https://people.canonical.com/~ubuntu-security/cve/CVE-2020-1712
https://lists.debian.org/debian-lts-announce/2022/06/msg00025.html
https://github.com/systemd/systemd/commit/bc130b6858327b382b07b3985cf48e2aa9016b2d
https://github.com/systemd/systemd/commit/637486261528e8aa3da9f26a4487dc254f4b7abb
https://www.openwall.com/lists/oss-security/2020/02/05/1
https://security-tracker.debian.org/tracker/CVE-2020-1712
https://nvd.nist.gov/vuln/detail/CVE-2020-1712
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1712
https://github.com/systemd/systemd/commit/ea0d0ede03c6f18dbc5036c5e9cccf97e415ccc2
https://www.mend.io/vulnerability-database/CVE-2020-1712

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:
Attack Vector (AV): LOCAL
Attack Complexity (AC): LOW
Privileges Required (PR): LOW
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): LOCAL
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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