An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.
Metrics
CVSS Version: 3.1 |
Base Score: 9.9 CRITICAL Vector: CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N