CVE ID:	CVE-2021-3733
Description:	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.
Test IDs:	1.3.6.1.4.1.25623.1.1.1.2.2023.3432   1.3.6.1.4.1.25623.1.0.892808   1.3.6.1.4.1.25623.1.1.1.2.2023.3477   1.3.6.1.4.1.25623.1.1.10.2021.0457
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2021-3733 https://bugs.python.org/issue43075 https://bugs.python.org/issue43075 https://bugzilla.redhat.com/show_bug.cgi?id=1995234 https://bugzilla.redhat.com/show_bug.cgi?id=1995234 https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb https://github.com/python/cpython/pull/24391 https://github.com/python/cpython/pull/24391 https://ubuntu.com/security/CVE-2021-3733 https://ubuntu.com/security/CVE-2021-3733 https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html