The remote host is missing an update to tinyproxy announced via advisory DSA 2564-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%202564-1

gpernot discovered that Tinyproxy, a HTTP proxy, is vulnerable to a denial of service by remote attackers by sending crafted request headers. For the stable distribution (squeeze), this problem has been fixed in version 1.8.2-1squeeze3. For the testing distribution (wheezy), this problem has been fixed in version 1.8.3-3. For the unstable distribution (sid), this problem has been fixed in version 1.8.3-3. We recommend that you upgrade your tinyproxy packages.