Vulnerability Details CVE-2021-3737
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.002
EPSS Ranking 37.5%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 7.1
References
- https://bugs.python.org/issue44022
- https://bugzilla.redhat.com/show_bug.cgi?id=1995162
- https://github.com/python/cpython/pull/25916
- https://github.com/python/cpython/pull/26503
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
- https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html
- https://security.netapp.com/advisory/ntap-20220407-0009/
- https://ubuntu.com/security/CVE-2021-3737
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://bugs.python.org/issue44022
- https://bugzilla.redhat.com/show_bug.cgi?id=1995162
- https://github.com/python/cpython/pull/25916
- https://github.com/python/cpython/pull/26503
- 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/2024/11/msg00024.html
- https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
- https://python-security.readthedocs.io/vuln/urllib-100-continue-loop.html
- https://security.netapp.com/advisory/ntap-20220407-0009/
- https://ubuntu.com/security/CVE-2021-3737
- https://www.oracle.com/security-alerts/cpujul2022.html
Products affected by CVE-2021-3737
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cpe:2.3:a:netapp:hci:-
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cpe:2.3:a:netapp:management_services_for_element_software:-
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cpe:2.3:a:netapp:netapp_xcp_smb:-
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cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-
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cpe:2.3:a:netapp:xcp_nfs:-
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cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3
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cpe:2.3:a:oracle:communications_cloud_native_core_network_exposure_function:22.1.1
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cpe:2.3:a:oracle:communications_cloud_native_core_policy:22.2.0
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cpe:2.3:a:python:python:3.6.0
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cpe:2.3:a:python:python:3.6.1
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cpe:2.3:a:python:python:3.6.10
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cpe:2.3:a:python:python:3.6.11
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cpe:2.3:a:python:python:3.6.12
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cpe:2.3:a:python:python:3.6.13
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cpe:2.3:a:python:python:3.6.2
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cpe:2.3:a:python:python:3.6.3
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cpe:2.3:a:python:python:3.6.4
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cpe:2.3:a:python:python:3.6.5
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cpe:2.3:a:python:python:3.6.6
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cpe:2.3:a:python:python:3.6.7
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cpe:2.3:a:python:python:3.6.8
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cpe:2.3:a:python:python:3.6.9
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cpe:2.3:a:python:python:3.7.0
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cpe:2.3:a:python:python:3.7.1
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cpe:2.3:a:python:python:3.7.10
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cpe:2.3:a:python:python:3.7.2
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cpe:2.3:a:python:python:3.7.3
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cpe:2.3:a:python:python:3.7.4
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cpe:2.3:a:python:python:3.7.5
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cpe:2.3:a:python:python:3.7.6
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cpe:2.3:a:python:python:3.7.7
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cpe:2.3:a:python:python:3.7.8
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cpe:2.3:a:python:python:3.7.9
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cpe:2.3:a:python:python:3.8.0
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cpe:2.3:a:python:python:3.8.0b1
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cpe:2.3:a:python:python:3.8.1
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cpe:2.3:a:python:python:3.8.10
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cpe:2.3:a:python:python:3.8.2
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cpe:2.3:a:python:python:3.8.3
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cpe:2.3:a:python:python:3.8.4
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cpe:2.3:a:python:python:3.8.5
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cpe:2.3:a:python:python:3.8.6
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cpe:2.3:a:python:python:3.8.7
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cpe:2.3:a:python:python:3.8.8
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cpe:2.3:a:python:python:3.8.9
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cpe:2.3:a:python:python:3.9.0
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cpe:2.3:a:python:python:3.9.1
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cpe:2.3:a:python:python:3.9.2
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cpe:2.3:a:python:python:3.9.3
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cpe:2.3:a:python:python:3.9.4
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cpe:2.3:a:python:python:3.9.5
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cpe:2.3:a:redhat:codeready_linux_builder:8.0
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cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:8.0
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cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0
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cpe:2.3:o:canonical:ubuntu_linux:14.04
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cpe:2.3:o:canonical:ubuntu_linux:16.04
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cpe:2.3:o:canonical:ubuntu_linux:18.04
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cpe:2.3:o:canonical:ubuntu_linux:20.04
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cpe:2.3:o:canonical:ubuntu_linux:21.04
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cpe:2.3:o:fedoraproject:fedora:33
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cpe:2.3:o:fedoraproject:fedora:34
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cpe:2.3:o:redhat:enterprise_linux:6.0
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cpe:2.3:o:redhat:enterprise_linux:7.0
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cpe:2.3:o:redhat:enterprise_linux:8.0
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cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0
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cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0