CVE-2021-3737
high · 7.5A 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.
7.5
CVSS
11.6%
EPSS (exploit prob.)
96th
EPSS percentile
2022-03-04
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weaknesses
CWE-835CWE-400
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| python | python | >= 3.6.0, < 3.6.14 |
| python | python | >= 3.7.0, < 3.7.11 |
| python | python | >= 3.8.0, < 3.8.11 |
| python | python | >= 3.9.0, < 3.9.6 |
| redhat | codeready_linux_builder | 8.0 |
| redhat | codeready_linux_builder_for_ibm_z_systems | 8.0 |
| redhat | codeready_linux_builder_for_power_little_endian | 8.0 |
| redhat | enterprise_linux | 6.0 |
| redhat | enterprise_linux | 7.0 |
| redhat | enterprise_linux | 8.0 |
| redhat | enterprise_linux_for_ibm_z_systems | 8.0 |
| redhat | enterprise_linux_for_power_little_endian | 8.0 |
| fedoraproject | fedora | 33 |
| fedoraproject | fedora | 34 |
| canonical | ubuntu_linux | 14.04 |
| canonical | ubuntu_linux | 16.04 |
| canonical | ubuntu_linux | 18.04 |
| canonical | ubuntu_linux | 20.04 |
| canonical | ubuntu_linux | 21.04 |
| netapp | hci | all versions |
| netapp | management_services_for_element_software | all versions |
| netapp | netapp_xcp_smb | all versions |
| netapp | ontap_select_deploy_administration_utility | all versions |
| netapp | xcp_nfs | all versions |
| oracle | communications_cloud_native_core_binding_support_function | 22.1.3 |
| oracle | communications_cloud_native_core_network_exposure_function | 22.1.1 |
| oracle | communications_cloud_native_core_policy | 22.2.0 |
Check a specific version with /api/v1/cve/match.
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
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2021-3737