{"id":"CVE-2013-4208","aliases":["DEBIAN-CVE-2013-4208","DSA-2736-1","EUVD-2013-4113","GHSA-gpf3-9fhm-cfpr","MGASA-2013-0242","openSUSE-SU-2024:10399-1"],"status":"published","title":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after...","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","severity":{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00389,"percentile":0.33239,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-200"],"published":"2013-08-09T17:38:37Z","modified":"2026-09-01T20:03:17Z","fixes":[{"ecosystem":"Debian:12","package":"filezilla","fixed_in":["3.7.3-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"filezilla","fixed_in":["3.7.3-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"filezilla","fixed_in":["3.7.3-1"],"sources":["osv"]},{"ecosystem":"Debian:12","package":"putty","fixed_in":["0.63-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"putty","fixed_in":["0.63-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"putty","fixed_in":["0.63-1"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1"}]}]},{"source":"osv","ecosystem":"Debian:12","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.60+2010-02-20-1+squeeze2"}]}],"versions":["0.60+2010-02-20-1","0.60+2010-02-20-1+squeeze1"],"bundled":4},{"source":"osv","ecosystem":"Debian:7","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.62-9+deb7u1"}]}],"versions":["0.62-9"],"bundled":4},{"source":"osv","ecosystem":"Mageia:2","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1.mga2"}]}],"bundled":4},{"source":"osv","ecosystem":"Mageia:2","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1.mga2"}]}],"bundled":4},{"source":"osv","ecosystem":"Mageia:3","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-1.mga3"}]}],"bundled":4},{"source":"osv","ecosystem":"Mageia:3","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.3-1.mga3"}]}],"bundled":4},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"filezilla","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.23.0.2-1.1"}]}],"bundled":4}],"products":[{"vendor":"putty","product":"putty"},{"vendor":"simon_tatham","product":"putty"}],"references":[{"url":"http://www.openwall.com/lists/oss-security/2013/08/06/11","tags":["mailing-list","x_refsource_MLIST","x_transferred","web"]},{"url":"http://secunia.com/advisories/54533","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","advisory"]},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/private-key-not-wiped.html","tags":["x_refsource_CONFIRM","x_transferred","web"]},{"url":"http://www.debian.org/security/2013/dsa-2736","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2013-08/msg00035.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"http://secunia.com/advisories/54379","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2013-4208"},{"url":"https://github.com/advisories/GHSA-gpf3-9fhm-cfpr"},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-4208","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2013-0242.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=10925","tags":["report"]},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-modmul.html","tags":["web"]},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-bignum-division-by-zero.html","tags":["web"]},{"url":"http://www.openwall.com/lists/oss-security/2013/08/06/13","tags":["web"]},{"url":"http://www.search-lab.hu/advisories/secadv-20130722","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4206","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4207","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4208","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4852","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2013-4208","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2013-08-19T23:00:00Z","modified":"2024-08-06T16:38:01.962Z","updated_at":"2026-11-02T14:34:58.193873Z"}],"euvd":[{"id":"EUVD-2013-4113","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2013-08-19T23:00:00Z","modified":"2024-08-06T16:38:01Z","updated_at":"2026-11-03T01:56:32.70868Z"}],"ghsa":[{"id":"GHSA-gpf3-9fhm-cfpr","title":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after...","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2022-05-14T01:18:14Z","modified":"2023-02-02T05:03:17Z","cwes":["CWE-200"],"updated_at":"2026-11-02T14:51:36.626177Z"}],"nvd":[{"id":"CVE-2013-4208","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2013-08-19T23:55:08.833Z","modified":"2026-06-16T23:56:49.09Z","cvss":[{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T14:02:35.248411Z"}],"osv":[{"id":"CVE-2013-4208","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2013-08-19T23:55:08Z","modified":"2026-04-16T06:17:48.631696268Z","updated_at":"2026-11-02T15:43:59.09154Z"},{"id":"DEBIAN-CVE-2013-4208","description":"The rsa_verify function in PuTTY before 0.63 (1) does not clear sensitive process memory after use and (2) does not free certain structures containing sensitive process memory, which might allow local users to discover private RSA and DSA keys.","status":"published","published":"2013-08-19T23:55:08.833Z","modified":"2026-09-01T20:03:17.630725303Z","updated_at":"2026-11-02T15:45:25.514579Z"},{"id":"DSA-2736-1","title":"putty - several","status":"published","published":"2013-08-11T00:00:00Z","modified":"2026-03-09T01:19:11.54204Z","updated_at":"2026-11-02T15:46:15.489951Z"},{"id":"MGASA-2013-0242","title":"Updated putty and filezilla packages fixes security vulnerability","description":"PuTTY versions 0.62 and earlier - as well as all software that\nintegrates   these versions of PuTTY - are vulnerable to an integer\noverflow leading to heap overflow during the SSH handshake before\nauthentication, caused by improper bounds checking of the length\nparameter received from the SSH server. This allows remote attackers\nto cause denial of service, and may have more severe impact on the\noperation of software that uses PuTTY code (CVE-2013-4852).\n\nPuTTY versions 0.62 and earlier - as well as all software that\nintegrates these versions of PuTTY - are vulnerable to a heap-corrupting\nbuffer underrun bug in the modmul function which performs modular\nmultiplication (CVE-2013-4206).\n\nPuTTY versions 0.62 and earlier - as well as all software that\nintegrates these versions of PuTTY - are vulnerable to a buffer overflow\nvulnerability in the calculation of modular inverses when verifying a\nDSA signature (CVE-2013-4207).\n\nPuTTY versions 0.62 and earlier - as well as all software that\nintegrates these versions of PuTTY - are vulnerable to private keys left\nin memory after being used by PuTTY tools (CVE-2013-4208).\n","status":"published","published":"2013-08-09T17:38:37Z","modified":"2026-04-16T06:24:33.138505177Z","updated_at":"2026-11-02T15:49:39.121227Z"},{"id":"openSUSE-SU-2024:10399-1","title":"filezilla-3.23.0.2-1.1 on GA media","description":"These are all security issues fixed in the filezilla-3.23.0.2-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T03:14:28.376086Z","updated_at":"2026-11-02T16:58:34.487567Z"}]}}