CVE Vulnerability

CVE-2023-23934

Werkzeug is a comprehensive WSGI web application library. Browsers may allow "nameless" cookies that look like `=value` instead of `key=value`. A vulnerable browser may allow a compromised application on an adjacent subdomain to exploit this to set a cookie like `=__Host-test=bad` for another subdomain. Werkzeug prior to 2.2.3 will parse the cookie `=__Host-test=bad` as __Host-test=bad`. If a Werkzeug application is running next to a vulnerable or malicious subdomain which sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key. The issue is fixed in Werkzeug 2.2.3.

3.5 /10

CVSS v3.0 : LOW

V3 Legend

Vector :

Exploitability : 2.1 / Impact : 1.4

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact LOW

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q Vendor Advisory
https://github.com/pallets/werkzeug/commit/cf275f42acad1b5950c50ffe8ef58fe62cdce028 Patch
https://github.com/pallets/werkzeug/releases/tag/2.2.3 Release Notes
Configurations

Configuration 1

cpe:2.3:a:palletsprojects:werkzeug:*:*:*:*:*:*:*:*
Information

Published : 2023-02-14 08:15

Updated : 2023-02-23 10:31

NVD link : CVE-2023-23934

Mitre link : CVE-2023-23934

Products Affected

Palletsprojects

Werkzeug

CWE
No CWE.