Oracle Linux: CVE-2023-23934: ELSA-2023-12709: python-werkzeug security update (LOW) (Multiple Advisories)

Oracle Linux: CVE-2023-23934: ELSA-2023-12709: python-werkzeug security update (LOW) (Multiple Advisories)

Severity

2

CVSS

(AV:A/AC:H/Au:N/C:N/I:P/A:N)

Published

02/14/2023

Created

08/09/2023

Added

08/07/2023

Modified

11/29/2024

Description

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. A flaw was found in python-werkzeug. Browsers may allow "nameless" cookies 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 for another subdomain. If a Werkzeug application is running next to a vulnerable or malicious subdomain that sets such a cookie using a vulnerable browser, the Werkzeug application will see the bad cookie value but the valid cookie key.

Solution(s)

• oracle-linux-upgrade-python3-werkzeug

References

• https://attackerkb.com/topics/cve-2023-23934
• CVE - 2023-23934
• ELSA-2023-12709