cve-2021-3733
Vulnerability from cvelistv5
Published
2022-03-07 00:00
Modified
2024-08-03 17:01
Severity ?
Summary
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.
References
secalert@redhat.comhttps://bugs.python.org/issue43075Exploit, Issue Tracking, Patch, Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1995234Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fbPatch, Third Party Advisory
secalert@redhat.comhttps://github.com/python/cpython/pull/24391Patch, Third Party Advisory
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
secalert@redhat.comhttps://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
secalert@redhat.comhttps://security.netapp.com/advisory/ntap-20220407-0001/Third Party Advisory
secalert@redhat.comhttps://ubuntu.com/security/CVE-2021-3733Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugs.python.org/issue43075Exploit, Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1995234Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fbPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/python/cpython/pull/24391Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20220407-0001/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ubuntu.com/security/CVE-2021-3733Patch, Third Party Advisory
Impacted products
Vendor Product Version
n/a python Version: Fixed in python v3.6.14, python v3.7.11, python v3.8.10, python v3.9.5.
Show details on NVD website

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