Related Vulnerabilities: CVE-2019-18678  

A HTTP request splitting issue has been found in Squid before 4.9. This issue allows attackers to smuggle HTTP requests through frontend software to a Squid which splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches between client and Squid with attacker controlled content at arbitrary URLs.

Severity High

Remote Yes

Type Content spoofing

Description

A HTTP request splitting issue has been found in Squid before 4.9. This issue allows attackers to smuggle HTTP requests through frontend software to a Squid which splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches between client and Squid with attacker controlled content at arbitrary URLs.

AVG-1062 squid 4.8-2 4.9-1 Critical Fixed

07 Nov 2019 ASA-201911-8 AVG-1062 squid Critical multiple issues

http://www.squid-cache.org/Advisories/SQUID-2019_10.txt
http://www.squid-cache.org/Versions/v4/changesets/squid-4-671ba97abe929156dc4c717ee52ad22fba0f7443.patch