Several remote vulnerabilities have been discovered in the Icedove mail client, an unbranded version of the Thunderbird client. The Common Vulnerabilities and Exposures project identifies the following problems:
moz_bug_r_a4 discovered that insecure handling of event handlers could lead to cross-site scripting.
Boris Zbarsky, Johnny Stenback and moz_bug_r_a4 discovered that incorrect principal handling could lead to cross-site scripting and the execution of arbitrary code.
Tom Ferris, Seth Spitzer, Martin Wargers, John Daggett and Mats Palmgren discovered crashes in the layout engine, which might allow the execution of arbitrary code.
For the stable distribution (etch), these problems have been fixed in version 184.108.40.206+220.127.116.11b.dfsg1+prepatch080417a-0etch1.
We recommend that you upgrade your icedove packages.