The remote host is missing an update to tinyproxy announced via advisory DSA 2222-1.
Christoph Martin discovered that incorrect ACL processing in TinyProxy, a lightweight, non-caching, optionally anonymizing http proxy could lead to unintended network access rights. The oldstable distribution (lenny) is not affected. For the stable distribution (squeeze), this problem has been fixed in version 1.8.2-1squeeze1. For the unstable distribution (sid), this problem has been fixed in version 1.8.2-2 We recommend that you upgrade your tinyproxy packages.