freedesktop systemd CVE-2020-1712 vulnerability in FreeDesktop and Other Products
Published on March 31, 2020

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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.

NVD

Vulnerability Analysis

CVE-2020-1712 is exploitable with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.

Attack Vector:
LOCAL
Attack Complexity:
LOW
Privileges Required:
LOW
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
HIGH
Integrity Impact:
HIGH
Availability Impact:
HIGH

Weakness Type

What is a Dangling pointer Vulnerability?

Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.

CVE-2020-1712 has been classified to as a Dangling pointer vulnerability or weakness.


Products Associated with CVE-2020-1712

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2020-1712 are published in these products:

FreeDesktop Systemd
 
Red Hat Ceph Storage
 
Red Hat Discovery
 
Red Hat Migration Toolkit
 
Red Hat Openshift Container Platform
 
Red Hat Enterprise Linux (RHEL)
 
Systemdproject Systemd
 
Debian Linux
 

Affected Versions

[UNKNOWN] systemd Version before v245-rc1 is affected by CVE-2020-1712

Exploit Probability

EPSS
0.11%
Percentile
29.19%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.