canonical ubuntu-linux CVE-2021-33910 vulnerability in Canonical and Other Products
Published on July 20, 2021

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basic/unit-name.c in systemd prior to 246.15, 247.8, 248.5, and 249.1 has a Memory Allocation with an Excessive Size Value (involving strdupa and alloca for a pathname controlled by a local attacker) that results in an operating system crash.

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Vulnerability Analysis

CVE-2021-33910 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 have no impact on confidentiality and integrity, and a high impact on availability.

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

Weakness Type

Allocation of Resources Without Limits or Throttling

The software allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.


Products Associated with CVE-2021-33910

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-33910 are published in these products:

Canonical Ubuntu Linux
 
FreeDesktop Systemd
 
Fedora Project Fedora
 
Debian Linux
 
NetApp Hci Management Node
 
NetApp Solidfire
 
Systemdproject Systemd
 

Exploit Probability

EPSS
0.08%
Percentile
23.49%

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.