security advisoryDebianDoS
Two vulnerabilities were discovered in Werkzeug, a collection of utilities for WSGI (web) applications. An attacker may inject cookies in specific situations, and cause a denial of service (DoS). . - ------------------------------------------------------------------------- Debian LTS Advisory DLA-3346-1 This email address is being protected from spambots. You need JavaScript enabled to view it. https://www.debian.org/lts/security/ Sylvain Beucler February 27, 2023 https://wiki.debian.org/LTS - ------------------------------------------------------------------------- Package : python-werkzeug Version : 0.14.1+dfsg1-4+deb10u2 CVE ID : CVE-2023-23934 CVE-2023-25577 Debian Bug : 1031370 Two vulnerabilities were discovered in Werkzeug, a collection of utilities for WSGI (web) applications. An attacker may inject cookies in specific situations, and cause a denial of service (DoS). CVE-2023-23934 Werkzeug 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. 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. CVE-2023-25577 Werkzeug's multipart form data parser will parse an unlimited number of parts, including file parts. Parts can be a small amount of bytes, but each requires CPU time to parse and may use more memory as Python data. If a request can be made to an endpoint that accesses `request.data`, `request.form`, `request.files`, or `request.get_data(parse_form_data=False)`, it can cause unexpectedly high resource usage. This allows an attacker to cause a denial of service by sending crafted multipartdata to an endpoint that will parse it. For Debian 10 buster, these problems have been fixed in version 0.14.1+dfsg1-4+deb10u2. We recommend that you upgrade your python-werkzeug packages. For the detailed security status of python-werkzeug please refer to its security tracker page at: https://security-tracker.debian.org/tracker/source-package/python-werkzeug Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at: https://wiki.debian.org/LTS . Ubuntu Security Notice USN-1234-1 details essential patches for python-routes to address vulnerabilities related to input validation and potential remote execution threats.. python-werkzeug, security update, Debian, DoS, web apps. . LinuxSecurity.com Team
Feb 27, 2023
Debian LTS
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