{"schemaVersion":3,"id":"CVE-2013-0176","aliases":["DEBIAN-CVE-2013-0176"],"status":"published","duplicateOf":null,"title":null,"description":"The publickey_from_privatekey function in libssh before 0.5.4, when no algorithm is matched during negotiations, allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a \"Client: Diffie-Hellman Key Exchange Init\" packet.","dates":{"published":"2013-02-05T23:11:00.000Z","modified":"2024-08-06T14:18:09.365Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":4.3,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":4.3,"severity":"medium","vector":"AV:N/AC:M/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.03049,"percentile":0.87359,"severity":"low","asOf":"2026-10-19T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-19T00:00:00.000Z","baselineScore":0.03049},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03049,"percentile":0.87359}],"last30":[{"date":"2026-09-19T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.03049,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.03049,"percentile":0.87359}]},"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":[],"exploitCount":0,"weaknesses":[{"id":"CWE-399","name":"Resource Management Errors","description":"Weaknesses in this category are related to improper management of system resources.","type":"category","status":"Draft","abstraction":null,"likelihoodOfExploit":null,"url":"https://cwe.mitre.org/data/definitions/399.html"}],"affected":[{"vendor":"debian","product":"libssh","name":"libssh","label":"libssh","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/libssh","purlType":"deb","versions":[{"text":"< 0.5.4-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 0.5.4-1","eol":null,"hubHref":null},{"vendor":"libssh","product":"libssh","name":"libssh","label":"libssh","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 0.5.3","noFixRecorded":false,"fixedIn":null},{"text":"0.4.7","noFixRecorded":false,"fixedIn":null},{"text":"0.4.8","noFixRecorded":false,"fixedIn":null},{"text":"0.5.0","noFixRecorded":false,"fixedIn":null},{"text":"0.5.0:rc1","noFixRecorded":false,"fixedIn":null},{"text":"0.5.1","noFixRecorded":false,"fixedIn":null},{"text":"0.5.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 0.5.3 | 0.4.7 | 0.4.8 | 0.5.0 | 0.5.0:rc1 | 0.5.1 | 0.5.2","eol":null,"hubHref":"/vendor/libssh/libssh"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html","label":"lists.fedoraproject.org/pipermail/package-announce/2013-February/098094.html","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","X Refsource FEDORA"]},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/81595","label":"exchange.xforce.ibmcloud.com/vulnerabilities/81595","hostname":"exchange.xforce.ibmcloud.com","tags":["VDB Entry","X Refsource XF"]},{"url":"http://secunia.com/advisories/51982","label":"secunia.com/advisories/51982","hostname":"secunia.com","tags":["Third Party Advisory","X Refsource SECUNIA","Vendor Advisory"]},{"url":"http://lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html","label":"lists.fedoraproject.org/pipermail/package-announce/2013-February/098065.html","hostname":"lists.fedoraproject.org","tags":["Vendor Advisory","X Refsource FEDORA"]},{"url":"http://www.ubuntu.com/usn/USN-1707-1","label":"www.ubuntu.com/usn/USN-1707-1","hostname":"www.ubuntu.com","tags":["Vendor Advisory","X Refsource UBUNTU"]},{"url":"http://www.libssh.org/2013/01/22/libssh-0-5-4-security-release/","label":"www.libssh.org/2013/01/22/libssh-0-5-4-security-release/","hostname":"www.libssh.org","tags":["X Refsource CONFIRM","Patch","Vendor Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2013-0176","label":"security-tracker.debian.org/tracker/CVE-2013-0176","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":["OPENSUSE-SU-2024:10036-1"],"duplicates":[],"related":["OPENSUSE-SU-2024:10036-1"]},"timeline":[{"kind":"published","date":"2013-02-05T23:11:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-06T14:18:09.365Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":18,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T18:02:46.250Z","stale":false,"partial":false}}