Description
An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon.
Remediation
References
Related Vulnerabilities
OpenSSL Use of a Broken or Risky Cryptographic Algorithm Vulnerability (CVE-2005-2946)
Oracle JRE CVE-2013-5840 Vulnerability (CVE-2013-5840)
MySQL Other Vulnerability (CVE-1999-1188)
MediaWiki Exposure of Resource to Wrong Sphere Vulnerability (CVE-2017-0367)
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