BIT-libpython-2021-3733
See a problem?- Import Source
- https://github.com/bitnami/vulndb/tree/main/data/libpython/BIT-libpython-2021-3733.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/BIT-libpython-2021-3733
- Aliases
- Published
- 2025-08-11T13:51:53.167Z
- Modified
- 2025-08-11T14:45:07.231568Z
- Summary
- [none]
- Details
-
There's a flaw in urllib's AbstractBasicAuthHandler class. An attacker who controls a malicious HTTP server that an HTTP client (such as web browser) connects to, could trigger a Regular Expression Denial of Service (ReDOS) during an authentication request with a specially crafted payload that is sent by the server to the client. The greatest threat that this flaw poses is to application availability.
- Database specific
{ "cpes": [ "cpe:2.3:a:python:python:*:*:*:*:*:*:*:*" ], "severity": "Medium" }- References
-
- https://bugs.python.org/issue43075
- https://bugzilla.redhat.com/show_bug.cgi?id=1995234
- https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb
- https://github.com/python/cpython/pull/24391
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
- https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
- https://nvd.nist.gov/vuln/detail/CVE-2021-3733
- https://security.netapp.com/advisory/ntap-20220407-0001/
- https://ubuntu.com/security/CVE-2021-3733
Affected packages
Bitnami / libpython
Package
- Name
- libpython
- Purl
- pkg:bitnami/libpython
Severity
- 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator