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
| Link | Resource |
|---|---|
| https://bugs.python.org/issue43075 | Exploit Issue Tracking Patch Vendor Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=1995234 | Issue Tracking Third Party Advisory |
| https://github.com/python/cpython/commit/7215d1ae25525c92b026166f9d5cac85fb | Patch Third Party Advisory |
| https://github.com/python/cpython/pull/24391 | Patch Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/05/msg00024.html | |
| https://lists.debian.org/debian-lts-announce/2023/06/msg00039.html | |
| https://security.netapp.com/advisory/ntap-20220407-0001/ | Third Party Advisory |
| https://ubuntu.com/security/CVE-2021-3733 | Patch Third Party Advisory |
Configurations
Configuration 1 (hide)
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Configuration 2 (hide)
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Configuration 3 (hide)
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Configuration 4 (hide)
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History
30 Jun 2023, 23:15
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Information
Published : 2022-03-10 17:42
Updated : 2024-02-28 19:09
NVD link : CVE-2021-3733
Mitre link : CVE-2021-3733
CVE.ORG link : CVE-2021-3733
JSON object : View
Products Affected
redhat
- enterprise_linux_for_power_little_endian_eus
- enterprise_linux
- enterprise_linux_server_tus
- enterprise_linux_for_ibm_z_systems
- codeready_linux_builder
- codeready_linux_builder_for_ibm_z_systems
- enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions
- codeready_linux_builder_for_power_little_endian
- enterprise_linux_server_update_services_for_sap_solutions
- enterprise_linux_for_power_little_endian
- enterprise_linux_server_aus
- enterprise_linux_for_ibm_z_systems_eus
- enterprise_linux_eus
netapp
- management_services_for_element_software_and_netapp_hci
- solidfire\,_enterprise_sds_\&_hci_storage_node
- ontap_select_deploy_administration_utility
- hci_compute_node_firmware
python
- python
fedoraproject
- fedora
- extra_packages_for_enterprise_linux
CWE
CWE-400
Uncontrolled Resource Consumption