{"id":"CVE-2015-5309","aliases":["DEBIAN-CVE-2015-5309","DLA-347-1","DSA-3409-1","EUVD-2015-5281","GHSA-xf6h-8pvx-cg8q","MGASA-2015-0442","UBUNTU-CVE-2015-5309","openSUSE-SU-2024:10374-1"],"status":"published","title":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a...","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","severity":{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.03467,"percentile":0.89144,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-189"],"published":"2015-11-10T21:26:39Z","modified":"2026-09-09T06:47:25Z","fixes":[{"ecosystem":"Debian:12","package":"putty","fixed_in":["0.66-1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"putty","fixed_in":["0.66-1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"putty","fixed_in":["0.66-1"],"sources":["osv"]},{"ecosystem":"Debian:6.0","package":"putty","fixed_in":["0.60+2010-02-20-1+squeeze4"],"sources":["osv"]},{"ecosystem":"Debian:7","package":"putty","fixed_in":["0.62-9+deb7u3"],"sources":["osv"]},{"ecosystem":"Debian:8","package":"putty","fixed_in":["0.63-10+deb8u1"],"sources":["osv"]},{"ecosystem":"Mageia:5","package":"putty","fixed_in":["0.66-1.mga5"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.66-1"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.66-1"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.66-1"}]}]},{"source":"osv","ecosystem":"Debian:6.0","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.60+2010-02-20-1+squeeze4"}]}],"versions":["0.60+2010-02-20-1","0.60+2010-02-20-1+squeeze1","0.60+2010-02-20-1+squeeze2","0.60+2010-02-20-1+squeeze3"]},{"source":"osv","ecosystem":"Debian:7","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.62-9+deb7u3"}]}],"versions":["0.62-9","0.62-9+deb7u1","0.62-9+deb7u2"]},{"source":"osv","ecosystem":"Debian:8","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.63-10+deb8u1"}]}],"versions":["0.63-10"]},{"source":"osv","ecosystem":"Mageia:5","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.66-1.mga5"}]}]},{"source":"osv","ecosystem":"openSUSE:Tumbleweed","package":"putty","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.67-1.5"}]}],"bundled":3}],"products":[{"vendor":"opensuse","product":"leap"},{"vendor":"opensuse","product":"opensuse"},{"vendor":"simon_tatham","product":"putty"}],"references":[{"url":"http://www.debian.org/security/2015/dsa-3409","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173021.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2015-December/173094.html","tags":["vendor-advisory","x_refsource_FEDORA","x_transferred","web"]},{"url":"http://www.securitytracker.com/id/1034308","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred","web"]},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/wishlist/vuln-ech-overflow.html","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web","report"]},{"url":"https://security.gentoo.org/glsa/201606-01","tags":["vendor-advisory","x_refsource_GENTOO","x_transferred","advisory"]},{"url":"http://lists.opensuse.org/opensuse-updates/2015-11/msg00099.html","tags":["vendor-advisory","x_refsource_SUSE","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2015-5309"},{"url":"https://github.com/advisories/GHSA-xf6h-8pvx-cg8q"},{"url":"https://security-tracker.debian.org/tracker/CVE-2015-5309","tags":["advisory"]},{"url":"https://advisories.mageia.org/MGASA-2015-0442.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=17114","tags":["report"]},{"url":"http://www.chiark.greenend.org.uk/~sgtatham/putty/changes.html","tags":["web"]},{"url":"https://ubuntu.com/security/CVE-2015-5309","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2015-5309","tags":["report"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2013-4852","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-2157","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-5309","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2015-5309","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2015-12-07T20:00:00Z","modified":"2024-08-06T06:41:09.521Z","updated_at":"2026-11-02T14:35:39.846011Z"}],"euvd":[{"id":"EUVD-2015-5281","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2015-12-07T20:00:00Z","modified":"2024-08-06T06:41:09Z","updated_at":"2026-11-03T02:22:00.863884Z"}],"ghsa":[{"id":"GHSA-xf6h-8pvx-cg8q","title":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a...","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2022-05-14T02:07:39Z","modified":"2023-02-02T05:05:10Z","updated_at":"2026-11-02T14:52:02.518349Z"}],"nvd":[{"id":"CVE-2015-5309","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2015-12-07T20:59:08.06Z","modified":"2026-06-17T00:28:54.18Z","cvss":[{"version":"2.0","score":4.3,"vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-189"],"updated_at":"2026-11-02T14:03:14.501367Z"}],"osv":[{"id":"CVE-2015-5309","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2015-12-07T20:59:08Z","modified":"2026-04-16T06:15:57.141382275Z","updated_at":"2026-11-02T15:44:00.594921Z"},{"id":"DEBIAN-CVE-2015-5309","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"published","published":"2015-12-07T20:59:08.06Z","modified":"2026-09-09T06:47:25.388073753Z","updated_at":"2026-11-02T15:45:26.752992Z"},{"id":"DLA-347-1","title":"putty - security update","status":"published","published":"2015-11-24T00:00:00Z","modified":"2026-03-09T01:19:52.662742Z","updated_at":"2026-11-02T15:46:11.734021Z"},{"id":"DSA-3409-1","title":"putty - security update","status":"published","published":"2015-12-01T00:00:00Z","modified":"2026-03-09T01:18:42.793718Z","updated_at":"2026-11-02T15:46:16.199525Z"},{"id":"MGASA-2015-0442","title":"Updated putty packages fix security vulnerability","description":"Versions of PuTTY 0.54 and 0.65 inclusive have a potentially\nmemory-corrupting integer overflow in the handling of the ECH (erase\ncharacters) control sequence in the terminal emulator (CVE-2015-5309).\n","status":"published","published":"2015-11-10T21:26:39Z","modified":"2026-04-16T06:23:24.955379916Z","updated_at":"2026-11-02T15:49:39.792687Z"},{"id":"openSUSE-SU-2024:10374-1","title":"putty-0.67-1.5 on GA media","description":"These are all security issues fixed in the putty-0.67-1.5 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2024-06-15T00:00:00Z","modified":"2026-02-04T02:29:46.641984Z","updated_at":"2026-11-02T16:58:34.487567Z"},{"id":"UBUNTU-CVE-2015-5309","description":"Integer overflow in the terminal emulator in PuTTY before 0.66 allows remote attackers to cause a denial of service (memory corruption) or possibly execute arbitrary code via an ECH (erase characters) escape sequence with a large parameter value, which triggers a buffer underflow.","status":"withdrawn","published":"2015-12-07T20:59:00Z","modified":"2025-07-16T07:17:34.043811Z","updated_at":"2026-11-02T15:54:10.385269Z"}]}}