canonical ubuntu-linux CVE-2021-3737 vulnerability in Canonical and Other Products
Published on March 4, 2022

product logo product logo product logo product logo product logo product logo
A flaw was found in python. An improperly handled HTTP response in the HTTP client code of python may allow a remote attacker, who controls the HTTP server, to make the client script enter an infinite loop, consuming CPU time. The highest threat from this vulnerability is to system availability.

NVD

Vulnerability Analysis

CVE-2021-3737 can be exploited with network access, and does not require authorization privileges or user interaction. 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:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
NONE
Scope:
UNCHANGED
Confidentiality Impact:
NONE
Integrity Impact:
NONE
Availability Impact:
HIGH

Weakness Type

What is an Infinite Loop Vulnerability?

The program contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. If the loop can be influenced by an attacker, this weakness could allow attackers to consume excessive resources such as CPU or memory.

CVE-2021-3737 has been classified to as an Infinite Loop vulnerability or weakness.


Products Associated with CVE-2021-3737

You can be notified by email with stack.watch whenever vulnerabilities like CVE-2021-3737 are published in these products:

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Exploit Probability

EPSS
0.12%
Percentile
31.46%

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.