Wrkzeug's incorrect parsing of nameless cookies leads to __Host- cookies bypass
概要
Wrkzeug's incorrect parsing of nameless cookies leads to __Host- cookies bypass
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
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.
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- Debian DEBIAN-CVE-2023-23934 python-werkzeug 修正版: 1.0.1+dfsg1-2+deb11u1
参照URL
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- advisory security.netapp.com
- advisory debian.org
- patch github.com
- web github.com