Internet Bug Bounty · Report #1910810

Apache HTTP Server: mod_proxy_uwsgi HTTP response splitting (CVE-2023-27522)

Validstatus

mediumseverity

4upvotes

23 Mar 2023disclosed

Summary

HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55.

Special characters in the origin response header can truncate/split the response forwarded to the client.

Acknowledgements: finder: Dimas Fariski Setyawan Putra (nyxsorcerer)

Security Advisory: https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2023-27522

How it was found

#Summary

HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.

https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2023-27522

Impact

The response headers can be truncated, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.

This report was disclosed publicly on HackerOne and belongs to its author and the program. See the original