Summary
Package updates are available for Amazon Linux 2023 that fix the following vulnerabilities: 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.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| Amazon Linux · 2023 | python3-werkzeug | 0:1.0.1-5.amzn2023.0.4 |
| Amazon Linux · 2023 | python3-werkzeug-doc | 0:1.0.1-5.amzn2023.0.4 |
Vulnerabilities 1
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Low 2.6
Wrkzeug's incorrect parsing of nameless cookies leads to __Host- cookies bypass
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 l…
References
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web
https://alas.aws.amazon.com/cve/html/CVE-2023-23934.html