{"schemaVersion":3,"id":"CVE-2002-0083","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Off-by-one error in the channel code of OpenSSH 2.0 through 3.0.2 allows local users or remote malicious servers to gain privileges.","dates":{"published":"2002-06-25T04:00:00.000Z","modified":"2024-08-08T02:35:17.574Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":10,"severity":"high","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.14688,"percentile":0.96644,"severity":"medium","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.14688},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.14688,"percentile":0.96644}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.14688,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.14688,"percentile":0.96644}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[{"id":"21314","name":"OpenSSH 2.x/3.0.1/3.0.2 - Channel Code Off-by-One","source":"exploit-database","url":"https://www.exploit-db.com/exploits/21314","maturity":"weaponized","reliabilityScore":0.8,"verified":true,"type":"remote","platforms":["unix"],"requiresAuth":null,"exploitdb":{"verified":true,"type":"remote","platform":"unix","file":"exploits/unix/remote/21314.txt","codes":["CVE-2002-0083","OSVDB-730"]},"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-193","name":"Off-by-one Error","description":"A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.","type":"weakness","status":"Draft","abstraction":"Base","likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/193.html"}],"affected":[{"vendor":"conectiva","product":"linux","name":"linux","label":"linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"5.0","noFixRecorded":false,"fixedIn":null},{"text":"5.1","noFixRecorded":false,"fixedIn":null},{"text":"6.0","noFixRecorded":false,"fixedIn":null},{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"ecommerce","noFixRecorded":false,"fixedIn":null},{"text":"graficas","noFixRecorded":false,"fixedIn":null}],"versionsText":"5.0 | 5.1 | 6.0 | 7.0 | ecommerce | graficas","eol":null,"hubHref":"/vendor/conectiva/linux"},{"vendor":"engardelinux","product":"secure_linux","name":"secure linux","label":"secure_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"1.0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.0.1","eol":null,"hubHref":"/vendor/engardelinux/secure_linux"},{"vendor":"immunix","product":"immunix","name":"immunix","label":"immunix","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"7.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.0","eol":null,"hubHref":"/vendor/immunix/immunix"},{"vendor":"mandrakesoft","product":"mandrake_linux","name":"mandrake linux","label":"mandrake_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.1","noFixRecorded":false,"fixedIn":null},{"text":"7.2","noFixRecorded":false,"fixedIn":null},{"text":"8.0","noFixRecorded":false,"fixedIn":null},{"text":"8.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.1 | 7.2 | 8.0 | 8.1","eol":null,"hubHref":"/vendor/mandrakesoft/mandrake_linux"},{"vendor":"mandrakesoft","product":"mandrake_linux_corporate_server","name":"mandrake linux corporate server","label":"mandrake_linux_corporate_server","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"1.0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.0.1","eol":null,"hubHref":"/vendor/mandrakesoft/mandrake_linux_corporate_server"},{"vendor":"mandrakesoft","product":"mandrake_single_network_firewall","name":"mandrake single network firewall","label":"mandrake_single_network_firewall","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"7.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.2","eol":null,"hubHref":"/vendor/mandrakesoft/mandrake_single_network_firewall"},{"vendor":"openbsd","product":"openssh","name":"openssh","label":"openssh","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 2.0, < 3.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 2.0, < 3.1","eol":null,"hubHref":"/vendor/openbsd/openssh"},{"vendor":"openpkg","product":"openpkg","name":"openpkg","label":"openpkg","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"1.0","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.0","eol":null,"hubHref":"/vendor/openpkg/openpkg"},{"vendor":"redhat","product":"linux","name":"linux","label":"linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"7.1","noFixRecorded":false,"fixedIn":null},{"text":"7.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"7.0 | 7.1 | 7.2","eol":null,"hubHref":"/vendor/redhat/linux"},{"vendor":"suse","product":"suse_linux","name":"suse linux","label":"suse_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"6.4","noFixRecorded":false,"fixedIn":null},{"text":"6.4:alpha","noFixRecorded":false,"fixedIn":null},{"text":"7.0","noFixRecorded":false,"fixedIn":null},{"text":"7.0:alpha","noFixRecorded":false,"fixedIn":null},{"text":"7.1","noFixRecorded":false,"fixedIn":null},{"text":"7.1:alpha","noFixRecorded":false,"fixedIn":null},{"text":"7.2","noFixRecorded":false,"fixedIn":null},{"text":"7.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"6.4 | 6.4:alpha | 7.0 | 7.0:alpha | 7.1 | 7.1:alpha | 7.2 | 7.3","eol":null,"hubHref":"/vendor/suse/suse_linux"},{"vendor":"trustix","product":"secure_linux","name":"secure linux","label":"secure_linux","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"1.1","noFixRecorded":false,"fixedIn":null},{"text":"1.2","noFixRecorded":false,"fixedIn":null},{"text":"1.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"1.1 | 1.2 | 1.5","eol":null,"hubHref":"/vendor/trustix/secure_linux"}],"affectedCount":11,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://archives.neohapsis.com/archives/bugtraq/2002-03/0108.html","label":"archives.neohapsis.com/archives/bugtraq/2002-03/0108.html","hostname":"archives.neohapsis.com","tags":["Mailing List","X Refsource BUGTRAQ","Broken Link"]},{"url":"http://www.osvdb.org/730","label":"www.osvdb.org/730","hostname":"www.osvdb.org","tags":["VDB Entry","X Refsource OSVDB","Broken Link"]},{"url":"http://www.securityfocus.com/bid/4241","label":"www.securityfocus.com/bid/4241","hostname":"www.securityfocus.com","tags":["VDB Entry","X Refsource BID","Broken Link","Third Party Advisory"]},{"url":"http://marc.info/?l=bugtraq&m=101561384821761&w=2","label":"marc.info?l=bugtraq&m=101561384821761&w=2","hostname":"marc.info","tags":["Mailing List","X Refsource BUGTRAQ"]},{"url":"http://online.securityfocus.com/advisories/3960","label":"online.securityfocus.com/advisories/3960","hostname":"online.securityfocus.com","tags":["Vendor Advisory","X Refsource HP","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://www.debian.org/security/2002/dsa-119","label":"www.debian.org/security/2002/dsa-119","hostname":"www.debian.org","tags":["Vendor Advisory","X Refsource DEBIAN","Broken Link"]},{"url":"http://www.novell.com/linux/security/advisories/2002_009_openssh_txt.html","label":"www.novell.com/linux/security/advisories/2002_009_openssh_txt.html","hostname":"www.novell.com","tags":["Vendor Advisory","X Refsource SUSE","Broken Link"]},{"url":"http://www.calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt","label":"www.calderasystems.com/support/security/advisories/CSSA-2002-012.0.txt","hostname":"www.calderasystems.com","tags":["Vendor Advisory","X Refsource CALDERA","Broken Link"]},{"url":"http://marc.info/?l=bugtraq&m=101586991827622&w=2","label":"marc.info?l=bugtraq&m=101586991827622&w=2","hostname":"marc.info","tags":["Mailing List","X Refsource BUGTRAQ","Patch"]},{"url":"http://www.linuxsecurity.com/advisories/other_advisory-1937.html","label":"www.linuxsecurity.com/advisories/other_advisory-1937.html","hostname":"www.linuxsecurity.com","tags":["Vendor Advisory","X Refsource ENGARDE","Broken Link","Patch"]},{"url":"http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000467","label":"distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000467","hostname":"distro.conectiva.com.br","tags":["Vendor Advisory","X Refsource CONECTIVA","Broken Link"]},{"url":"http://marc.info/?l=bugtraq&m=101553908201861&w=2","label":"marc.info?l=bugtraq&m=101553908201861&w=2","hostname":"marc.info","tags":["Mailing List","X Refsource BUGTRAQ"]},{"url":"http://marc.info/?l=bugtraq&m=101552065005254&w=2","label":"marc.info?l=bugtraq&m=101552065005254&w=2","hostname":"marc.info","tags":["Mailing List","X Refsource BUGTRAQ"]},{"url":"http://www.linux-mandrake.com/en/security/2002/MDKSA-2002-019.php","label":"www.linux-mandrake.com/en/security/2002/MDKSA-2002-019.php","hostname":"www.linux-mandrake.com","tags":["Vendor Advisory","X Refsource MANDRAKE","Broken Link"]},{"url":"http://www.redhat.com/support/errata/RHSA-2002-043.html","label":"www.redhat.com/support/errata/RHSA-2002-043.html","hostname":"www.redhat.com","tags":["Vendor Advisory","X Refsource REDHAT","Broken Link"]},{"url":"http://www.iss.net/security_center/static/8383.php","label":"www.iss.net/security_center/static/8383.php","hostname":"www.iss.net","tags":["VDB Entry","X Refsource XF","Broken Link"]},{"url":"http://www.openbsd.org/advisories/ssh_channelalloc.txt","label":"www.openbsd.org/advisories/ssh_channelalloc.txt","hostname":"www.openbsd.org","tags":["X Refsource CONFIRM","Vendor Advisory"]},{"url":"http://online.securityfocus.com/archive/1/264657","label":"online.securityfocus.com/archive/1/264657","hostname":"online.securityfocus.com","tags":["Mailing List","X Refsource BUGTRAQ","Broken Link","Third Party Advisory","VDB Entry"]},{"url":"http://archives.neohapsis.com/archives/vulnwatch/2002-q1/0060.html","label":"archives.neohapsis.com/archives/vulnwatch/2002-q1/0060.html","hostname":"archives.neohapsis.com","tags":["Mailing List","X Refsource VULNWATCH","Broken Link"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2002-06-25T04:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-08T02:35:17.574Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":90,"level":"critical","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T14:35:58.819Z","stale":false,"partial":false}}