{"id":"CVE-2002-0640","aliases":["DEBIAN-CVE-2002-0640","EUVD-2002-0634","GHSA-q9hw-p2pq-q4p7"],"status":"published","title":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute...","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","severity":{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.28161,"percentile":0.98124,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":true},"published":"2002-07-03T04:00:00Z","modified":"2026-10-22T23:47:33Z","exploits":[{"source":"exploitdb","id":"EDB-21578","title":"OpenSSH 3.x - Challenge-Response Buffer Overflow (1)","type":"remote","platform":"unix","date":"2002-06-24","verified":true,"url":"https://www.exploit-db.com/exploits/21578"},{"source":"exploitdb","id":"EDB-21579","title":"OpenSSH 3.x - Challenge-Response Buffer Overflow (2)","type":"remote","platform":"unix","date":"2002-06-24","verified":true,"url":"https://www.exploit-db.com/exploits/21579"}],"fixes":[{"ecosystem":"Debian:12","package":"openssh","fixed_in":["1:3.4"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"openssh","fixed_in":["1:3.4"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"openssh","fixed_in":["1:3.4"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.4"}]}]},{"source":"osv","ecosystem":"Debian:13","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.4"}]}]},{"source":"osv","ecosystem":"Debian:14","package":"openssh","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1:3.4"}]}]}],"products":[{"vendor":"openbsd","product":"openssh"}],"references":[{"url":"http://www.debian.org/security/2002/dsa-134","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"http://www.redhat.com/support/errata/RHSA-2002-127.html","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102514371522793\u0026w=2","tags":["mailing-list","x_transferred","web"]},{"url":"http://www.novell.com/linux/security/advisories/2002_024_openssh_txt.html","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102532054613894\u0026w=2","tags":["mailing-list","x_transferred","web"]},{"url":"http://www.osvdb.org/839","tags":["vdb-entry","x_transferred","web"]},{"url":"http://www.cert.org/advisories/CA-2002-18.html","tags":["third-party-advisory","x_transferred","US Government Resource","advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102521542826833\u0026w=2","tags":["mailing-list","x_transferred","web"]},{"url":"http://www.redhat.com/support/errata/RHSA-2002-131.html","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://www.securityfocus.com/bid/5093","tags":["vdb-entry","x_transferred","web"]},{"url":"ftp://ftp.caldera.com/pub/security/OpenLinux/CSSA-2002-030.0.txt","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://www.linuxsecurity.com/advisories/other_advisory-2177.html","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"http://www.kb.cert.org/vuls/id/369347","tags":["third-party-advisory","x_transferred","US Government Resource","web"]},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a\u0026anuncio=000502","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://www1.itrc.hp.com/service/cki/docDisplay.do?docId=HPSBUX0206-195","tags":["vendor-advisory","x_transferred","web"]},{"url":"http://www.mandrakesoft.com/security/advisories?name=MDKSA-2002:040","tags":["vendor-advisory","x_transferred","advisory"]},{"url":"http://marc.info/?l=bugtraq\u0026m=102514631524575\u0026w=2","tags":["mailing-list","x_transferred","web"]},{"url":"http://www.openwall.com/lists/oss-security/2024/07/01/3","tags":["mailing-list","x_transferred","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2002-0640"},{"url":"https://github.com/advisories/GHSA-q9hw-p2pq-q4p7"},{"url":"https://security-tracker.debian.org/tracker/CVE-2002-0640","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2002-0640","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2003-04-02T05:00:00Z","modified":"2024-08-08T02:56:38.391Z","updated_at":"2026-11-02T14:33:55.642267Z"}],"euvd":[{"id":"EUVD-2002-0634","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2003-04-02T05:00:00Z","modified":"2024-08-08T02:56:38Z","updated_at":"2026-11-03T01:14:59.632362Z"}],"ghsa":[{"id":"GHSA-q9hw-p2pq-q4p7","title":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute...","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2022-05-03T03:07:55Z","modified":"2023-02-01T05:00:58Z","updated_at":"2026-11-02T14:49:38.712812Z"}],"nvd":[{"id":"CVE-2002-0640","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2002-07-03T04:00:00Z","modified":"2026-06-16T21:57:50.567Z","cvss":[{"version":"2.0","score":10,"vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:00:42.220505Z"}],"osv":[{"id":"CVE-2002-0640","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2002-07-03T04:00:00Z","modified":"2026-04-10T03:33:19.895141Z","updated_at":"2026-11-02T15:43:55.998148Z"},{"id":"DEBIAN-CVE-2002-0640","description":"Buffer overflow in sshd in OpenSSH 2.3.1 through 3.3 may allow remote attackers to execute arbitrary code via a large number of responses during challenge response authentication when OpenBSD is using PAM modules with interactive keyboard authentication (PAMAuthenticationViaKbdInt).","status":"published","published":"2002-07-03T04:00:00Z","modified":"2026-10-22T23:47:33.810879744Z","updated_at":"2026-11-02T15:45:22.248131Z"}]}}