Summary: | <dev-python/werkzeug-2.2.3: DoS via multipart form upload | ||
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Product: | Gentoo Security | Reporter: | John Helmert III <ajak> |
Component: | Vulnerabilities | Assignee: | Gentoo Security <security> |
Status: | IN_PROGRESS --- | ||
Severity: | minor | CC: | mgorny, python |
Priority: | Normal | ||
Version: | unspecified | ||
Hardware: | All | ||
OS: | Linux | ||
URL: | https://github.com/pallets/werkzeug/security/advisories/GHSA-xg9f-g7g7-2323 | ||
Whiteboard: | B3 [glsa?] | ||
Package list: | Runtime testing required: | --- | |
Bug Depends on: | 897964 | ||
Bug Blocks: |
Description
John Helmert III
2023-02-26 18:26:59 UTC
Cleanup done. Thanks! CVE-2023-23934 (https://github.com/pallets/werkzeug/security/advisories/GHSA-px8h-6qxv-m22q): 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. |