Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with "collapsedforwarding on" are vulnerable. Configurations with "collapsedforwarding off" or without a "collapsedforwarding" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsedforwarding lines from their squid.conf.
{
"binaries": [
{
"binary_name": "squid",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
},
{
"binary_name": "squid-cgi",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
},
{
"binary_name": "squid-common",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
},
{
"binary_name": "squid-purge",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
},
{
"binary_name": "squid3",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
},
{
"binary_name": "squidclient",
"binary_version": "3.5.12-1ubuntu7.16+esm6"
}
]
}
{
"binaries": [
{
"binary_name": "squid",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
},
{
"binary_name": "squid-cgi",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
},
{
"binary_name": "squid-common",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
},
{
"binary_name": "squid-purge",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
},
{
"binary_name": "squid3",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
},
{
"binary_name": "squidclient",
"binary_version": "3.5.27-1ubuntu1.14+esm5"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "squid",
"binary_version": "4.10-1ubuntu1.12"
},
{
"binary_name": "squid-cgi",
"binary_version": "4.10-1ubuntu1.12"
},
{
"binary_name": "squid-common",
"binary_version": "4.10-1ubuntu1.12"
},
{
"binary_name": "squid-purge",
"binary_version": "4.10-1ubuntu1.12"
},
{
"binary_name": "squidclient",
"binary_version": "4.10-1ubuntu1.12"
}
]
}
{
"availability": "No subscription required",
"binaries": [
{
"binary_name": "squid",
"binary_version": "5.7-0ubuntu0.22.04.4"
},
{
"binary_name": "squid-cgi",
"binary_version": "5.7-0ubuntu0.22.04.4"
},
{
"binary_name": "squid-common",
"binary_version": "5.7-0ubuntu0.22.04.4"
},
{
"binary_name": "squid-openssl",
"binary_version": "5.7-0ubuntu0.22.04.4"
},
{
"binary_name": "squid-purge",
"binary_version": "5.7-0ubuntu0.22.04.4"
},
{
"binary_name": "squidclient",
"binary_version": "5.7-0ubuntu0.22.04.4"
}
]
}