CVE-2021-3733

MEDIUM

6.5

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung6.5

SchweregradMEDIUM

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienLOW

BenutzerinteraktionNONE

Veroffentlicht3/10/2022

Zuletzt geandert11/3/2025

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

fedoraproject:extra_packages_for_enterprise_linuxfedoraproject:fedoranetapp:hci_compute_node_firmwarenetapp:management_services_for_element_software_and_netapp_hcinetapp:ontap_select_deploy_administration_utilitynetapp:solidfire\,_enterprise_sds_\&_hci_storage_nodepython:pythonredhat:codeready_linux_builderredhat:codeready_linux_builder_for_ibm_z_systemsredhat:codeready_linux_builder_for_power_little_endianredhat:enterprise_linuxredhat:enterprise_linux_eusredhat:enterprise_linux_for_ibm_z_systemsredhat:enterprise_linux_for_ibm_z_systems_eusredhat:enterprise_linux_for_power_little_endianredhat:enterprise_linux_for_power_little_endian_eusredhat:enterprise_linux_server_ausredhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutionsredhat:enterprise_linux_server_tusredhat:enterprise_linux_server_update_services_for_sap_solutions

Schwachen (CWE)

CWE-400CWE-400

Referenzen

https://bugs.python.org/issue43075(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=1995234(secalert@redhat.com)

https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb(secalert@redhat.com)

https://github.com/python/cpython/pull/24391(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html(secalert@redhat.com)

https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html(secalert@redhat.com)

https://security.netapp.com/advisory/ntap-20220407-0001/(secalert@redhat.com)

https://ubuntu.com/security/CVE-2021-3733(secalert@redhat.com)

https://bugs.python.org/issue43075(af854a3a-2127-422b-91ae-364da2661108)

https://bugzilla.redhat.com/show_bug.cgi?id=1995234(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb(af854a3a-2127-422b-91ae-364da2661108)

https://github.com/python/cpython/pull/24391(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2024/12/msg00000.html(af854a3a-2127-422b-91ae-364da2661108)

https://security.netapp.com/advisory/ntap-20220407-0001/(af854a3a-2127-422b-91ae-364da2661108)

https://ubuntu.com/security/CVE-2021-3733(af854a3a-2127-422b-91ae-364da2661108)

IOC Korrelationen

Keine Korrelationen erfasst

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