#VU58295 Resource management error


Published: 2021-11-23

Vulnerability identifier: #VU58295

Vulnerability risk: Low

CVSSv3.1:

CVE-ID: CVE-2021-3733

CWE-ID: CWE-399

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Python
Universal components / Libraries / Scripting languages

Vendor: Python.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to improper management of internal resources within the application within the AbstractBasicAuthHandler class in urllib. A remote attacker with control over the server can perform regular expression denial of service attack during authentication.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Python: 3.6 - 3.9.4


CPE

External links
http://bugzilla.redhat.com/show_bug.cgi?id=1995234


Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?


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