Gentoo Linux Security Advisory 201607-1 - Multiple vulnerabilities have been found in Squid, the worst of which could lead to arbitrary code execution, or cause a Denial of Service condition. Versions less than 3.5.19 are affected.
f3ed5792a89c6aee3d29169c951a32dfbcc2492998847681a69bf92922eb71d4Ubuntu Security Notice 2995-1 - Yuriy M. Kaminskiy discovered that the Squid pinger utility incorrectly handled certain ICMPv6 packets. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly cause Squid to leak information into log files. Yuriy M. Kaminskiy discovered that the Squid cachemgr.cgi tool incorrectly handled certain crafted data. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.
19d45016c93c515ab0067629562c37bd5711e3322bb091870d52f61616af52a2Red Hat Security Advisory 2016-1140-01 - The "squid34" packages provide version 3.4 of Squid, a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Note that apart from "squid34", this version of Red Hat Enterprise Linux also includes the "squid" packages which provide Squid version 3.1. Security Fix: A buffer overflow flaw was found in the way the Squid cachemgr.cgi utility processed remotely relayed Squid input. When the CGI interface utility is used, a remote attacker could possibly use this flaw to execute arbitrary code.
4ddd25072f9b7bdc9d460f29a486fcdf22fc646b8001810de74d8404286f2dfbRed Hat Security Advisory 2016-1139-01 - Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Security Fix: A buffer overflow flaw was found in the way the Squid cachemgr.cgi utility processed remotely relayed Squid input. When the CGI interface utility is used, a remote attacker could possibly use this flaw to execute arbitrary code. Buffer overflow and input validation flaws were found in the way Squid processed ESI responses. If Squid was used as a reverse proxy, or for TLS/HTTPS interception, a remote attacker able to control ESI components on an HTTP server could use these flaws to crash Squid, disclose parts of the stack memory, or possibly execute arbitrary code as the user running Squid.
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