Squid 3.x before 3.5.15 and 4.x before 4.0.7 does not properly append data to String objects, which allows remote servers to cause a denial of service (assertion failure and daemon exit) via a long string, as demonstrated by a crafted HTTP Vary header.
{ "availability": "No subscription required", "ubuntu_priority": "low", "binaries": [ { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-cgi" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-cgi-dbgsym" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-common" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-dbg" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-dbgsym" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-purge" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid-purge-dbgsym" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squid3" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squidclient" }, { "binary_version": "3.5.12-1ubuntu7.5", "binary_name": "squidclient-dbgsym" } ] }