{"id":"UBUNTU-CVE-2013-4852","details":"Integer overflow in PuTTY 0.62 and earlier, WinSCP before 5.1.6, and other products that use PuTTY allows remote SSH servers to cause a denial of service (crash) and possibly execute arbitrary code in certain applications that use PuTTY via a negative size value in an RSA key signature during the SSH handshake, which triggers a heap-based buffer overflow.","modified":"2025-09-08T16:43:05Z","published":"2013-08-19T23:55:00Z","upstream":["CVE-2013-4852"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2013-4852"},{"type":"REPORT","url":"http://www.securityfocus.com/archive/1/527763/30/0"},{"type":"REPORT","url":"http://svn.tartarus.org/sgt?view=revision&sortby=date&revision=9896"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2013-4852"}],"affected":[{"package":{"name":"putty","ecosystem":"Ubuntu:14.04:LTS","purl":"pkg:deb/ubuntu/putty@0.63-1?arch=source&distro=trusty"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1"}]}],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"0.63-1","binary_name":"pterm"},{"binary_version":"0.63-1","binary_name":"putty"},{"binary_version":"0.63-1","binary_name":"putty-tools"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2013/UBUNTU-CVE-2013-4852.json"}}],"schema_version":"1.7.3","severity":[{"type":"Ubuntu","score":"medium"}]}