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CVE-2021-3737 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://bugs.python.org/issue44022 Exploit  Issue Tracking  Vendor Advisory 
https://bugs.python.org/issue44022 Exploit  Issue Tracking  Vendor Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=1995162 Issue Tracking  Patch  Third Party Advisory 
https://bugzilla.redhat.com/show_bug.cgi?id=1995162 Issue Tracking  Patch  Third Party Advisory 
https://github.com/python/cpython/pull/25916 Patch  Third Party Advisory 
https://github.com/python/cpython/pull/25916 Patch  Third Party Advisory 
https://github.com/python/cpython/pull/26503 Patch  Third Party Advisory 
https://github.com/python/cpython/pull/26503 Patch  Third Party Advisory 
https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html Patch  Third Party Advisory 
https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html Patch  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220407-0009/ Third Party Advisory 
https://security.netapp.com/advisory/ntap-20220407-0009/ Third Party Advisory 
https://ubuntu.com/security/CVE-2021-3737 Patch  Third Party Advisory 
https://ubuntu.com/security/CVE-2021-3737 Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpujul2022.html Patch  Third Party Advisory 
https://www.oracle.com/security-alerts/cpujul2022.html Patch  Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-400 Uncontrolled Resource Consumption cwe source acceptance level NIST  
CWE-835 Loop with Unreachable Exit Condition ('Infinite Loop') cwe source acceptance level NIST   Red Hat, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

11 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-3737
NVD Published Date:
03/04/2022
NVD Last Modified:
11/21/2024
Source:
Red Hat, Inc.