The remote host is missing an update to iceweasel announced via advisory DSA 1607-1.

https://secure1.securityspace.com/smysecure/catid.html?in=DSA%201607-1

Several remote vulnerabilities have been discovered in the Iceweasel webbrowser, an unbranded version of the Firefox browser. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2008-2798 Devon Hubbard, Jesse Ruderman and Martijn Wargers discovered crashes in the layout engine, which might allow the execution of arbitrary code. CVE-2008-2799 Igor Bukanov, Jesse Ruderman and Gary Kwong discovered crashes in the Javascript engine, which might allow the execution of arbitrary code. CVE-2008-2800 moz_bug_r_a4 discovered several cross-site scripting vulnerabilities. CVE-2008-2801 Collin Jackson and Adam Barth discovered that Javascript code could be executed in the context or signed JAR archives. CVE-2008-2802 moz_bug_r_a4 discovered that XUL documements can escalate privileges by accessing the pre-compiled fastload file. CVE-2008-2803 moz_bug_r_a4 discovered that missing input sanitising in the mozIJSSubScriptLoader.loadSubScript() function could lead to the execution of arbitrary code. Iceweasel itself is not affected, but some addons are. CVE-2008-2805 Claudio Santambrogio discovered that missing access validation in DOM parsing allows malicious web sites to force the browser to upload local files to the server, which could lead to information disclosure. CVE-2008-2807 Daniel Glazman discovered that a programming error in the code for parsing .properties files could lead to memory content being exposed to addons, which could lead to information disclosure. CVE-2008-2808 Masahiro Yamada discovered that file URLS in directory listings were insufficiently escaped. CVE-2008-2809 John G. Myers, Frank Benkstein and Nils Toedtmann discovered that alternate names on self-signed certificates were handled insufficiently, which could lead to spoofings secure connections. CVE-2008-2811 Greg McManus discovered discovered a crash in the block reflow code, which might allow the execution of arbitrary code. For the stable distribution (etch), these problems have been fixed in version 2.0.0.15-0etch1. Iceweasel from the unstable distribution (sid) links dynamically against the xulrunner library. We recommend that you upgrade your iceweasel package.