Integer signedness error in the ssh2_rdpkt function in PuTTY before 0.56 allows remote attackers to execute arbitrary code via a SSH2_MSG_DEBUG packet with a modified stringlen parameter, which leads to a buffer overflow.Referenceshttp://www-1.ibm.com/support/docview.wss?uid=ssg1S1002414http://secunia.com/advisories/13012/http://www.idefense.com/application/poi/display?id=155&type=vulnerabilities&flashstatus=truehttp://www.chiark.greenend.org.uk/~sgtatham/putty/https://exchange.xforce.ibmcloud.com/vulnerabilities/17886http://secunia.com/advisories/12987/http://www.securityfocus.com/bid/11549http://marc.info/?l=bugtraq&m=109889312917613&w=2http://www-1.ibm.com/support/docview.wss?uid=ssg1S1002416http://secunia.com/advisories/17214http://www.gentoo.org/security/en/glsa/glsa-200410-29.xml
