high7.5
CVE-2021-3737
A flaw was found in python.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Python | Python | from 3.6.0 before 3.6.14 from 3.7.0 before 3.7.11 from 3.8.0 before 3.8.11 from 3.9.0 before 3.9.6 |
| Redhat | Codeready Linux Builder | Version 8.0 |
| Redhat | Codeready Linux Builder For Ibm Z Systems | Version 8.0 |
| Redhat | Codeready Linux Builder For Power Little Endian | Version 8.0 |
| Redhat | Enterprise Linux | Versions 6.0, 7.0, 8.0 |
| Redhat | Enterprise Linux For Ibm Z Systems | Version 8.0 |
| Redhat | Enterprise Linux For Power Little Endian | Version 8.0 |
| Fedoraproject | Fedora | Versions 33, 34 |
| Canonical | Ubuntu Linux | Versions 14.04, 16.04, 18.04, 20.04, 21.04 |
| Netapp | Hci | All versions |
| Netapp | Management Services For Element Software | All versions |
| Netapp | Netapp Xcp Smb | All versions |
Weakness classification
References
- NVD record
- CVE.org record
- 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://lists.debian.org/debian-lts-announce/2024/11/msg00024.html
- https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html