CVE-2021-3737 (GCVE-0-2021-3737)
Vulnerability from cvelistv5
Published
2022-03-04 00:00
Modified
2025-11-03 21:45
Severity ?
CWE
  • CWE-835 - - Loop with Unreachable Exit Condition ('Infinite Loop'), CWE-400 - Uncontrolled Resource Consumption
Summary
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.
References
secalert@redhat.com https://bugs.python.org/issue44022 Exploit, Issue Tracking, Vendor Advisory
secalert@redhat.com https://bugzilla.redhat.com/show_bug.cgi?id=1995162 Issue Tracking, Patch, Third Party Advisory
secalert@redhat.com https://github.com/python/cpython/pull/25916 Patch, Third Party Advisory
secalert@redhat.com https://github.com/python/cpython/pull/26503 Patch, Third Party Advisory
secalert@redhat.com https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
secalert@redhat.com https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
secalert@redhat.com https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html Patch, Third Party Advisory
secalert@redhat.com https://security.netapp.com/advisory/ntap-20220407-0009/ Third Party Advisory
secalert@redhat.com https://ubuntu.com/security/CVE-2021-3737 Patch, Third Party Advisory
secalert@redhat.com https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugs.python.org/issue44022 Exploit, Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://bugzilla.redhat.com/show_bug.cgi?id=1995162 Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/python/cpython/pull/25916 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://github.com/python/cpython/pull/26503 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
af854a3a-2127-422b-91ae-364da2661108 https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
af854a3a-2127-422b-91ae-364da2661108 https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20220407-0009/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://ubuntu.com/security/CVE-2021-3737 Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a python Version: Fixed in python v3.6.14, python v3.7.11, python v3.8.11, python v3.9.6, python v3.10.0b2
Show details on NVD website

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