Resource Exhaustion Affecting python3 package, versions <3.6.15-3.91.4


Severity

Recommended
low

Based on SUSE Linux Enterprise Server security rating.

Threat Intelligence

EPSS
0.34% (73rd percentile)

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  • Snyk IDSNYK-SLES152-PYTHON3-2651146
  • published14 Apr 2022
  • disclosed13 Dec 2021

Introduced: 13 Dec 2021

CVE-2021-3733  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade SLES:15.2 python3 to version 3.6.15-3.91.4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3 package and not the python3 package as distributed by SLES. See How to fix? for SLES:15.2 relevant fixed versions and status.

There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.

CVSS Scores

version 3.1