VDB
BIT-python-min-2021-3733
BIT-python-min-2021-3733
PUBLISHED
CVSS 6.5 MEDIUM
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.
Risk Scores
CVSS 3.1
6.5
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Bitnami | python-min | 0, 3.7.0, 3.8.0 |
Exploit Intelligence
- zephyr-crosstool-arm-grype.html (github-poc)
Timeline
- Jan 16, 2025 CVE Published
- Nov 6, 2025 CVE Updated
References
- https://bugs.python.org/issue43075 url
- https://bugzilla.redhat.com/show_bug.cgi?id=1995234 url
- https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb url
- https://github.com/python/cpython/pull/24391 url
- https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html url
- https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html url
- https://security.netapp.com/advisory/ntap-20220407-0001/ url
- https://ubuntu.com/security/CVE-2021-3733 url
- https://nvd.nist.gov/vuln/detail/CVE-2021-3733 url
- https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html url