CVE-2021-3733

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.

Link	Resource
https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb	Patch Third Party Advisory
https://ubuntu.com/security/CVE-2021-3733	Patch Third Party Advisory
https://bugs.python.org/issue43075	Exploit Issue Tracking
https://bugzilla.redhat.com/show_bug.cgi?id=1995234	Issue Tracking Third Party Advisory
https://github.com/python/cpython/pull/24391	Patch Third Party Advisory
https://security.netapp.com/advisory/ntap-20220407-0001/	Third Party Advisory

Configuration 1

cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:a:python:python:3.10.0:-:*:*:*:*:*:* cpe:2.3:a:python:python:*:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_aus:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:* cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_ibm_z_systems:8.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder_for_power_little_endian:8.0:*:*:*:*:*:*:* cpe:2.3:a:redhat:codeready_linux_builder:8.0:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:* cpe:2.3:a:fedoraproject:extra_packages_for_enterprise_linux:7.0:*:*:*:*:*:*:* cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:* cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:management_services_for_element_software_and_netapp_hci:-:*:*:*:*:*:*:* cpe:2.3:a:netapp:solidfire,_enterprise_sds_&_hci_storage_node:-:*:*:*:*:*:*:*

---

Published : 2022-03-10 05:42

Updated : 2022-10-26 01:35

---

NVD link : CVE-2021-3733

Mitre link : CVE-2021-3733

Extra Packages For Enterprise Linux

Fedoraproject

CWE-400