{"schemaVersion":3,"id":"CVE-2009-4501","aliases":["DEBIAN-CVE-2009-4501"],"status":"published","duplicateOf":null,"title":null,"description":"The zbx_get_next_field function in libs/zbxcommon/str.c in Zabbix Server before 1.6.8 allows remote attackers to cause a denial of service (crash) via a request that lacks expected separators, which triggers a NULL pointer dereference, as demonstrated using the Command keyword.","dates":{"published":"2009-12-31T18:00:00.000Z","modified":"2024-09-17T01:37:01.050Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5,"severity":"medium","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","computed":false,"selection":"backend-summary"},"metrics":[{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":5,"severity":"medium","vector":"AV:N/AC:L/Au:N/C:N/I:N/A:P","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.0853,"percentile":0.95037,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.0853},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0853,"percentile":0.95037}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.0853,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.0853,"percentile":0.95037}]},"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":"10432","name":"Zabbix Server - Multiple Vulnerabilities","source":"exploit-database","url":"https://www.exploit-db.com/exploits/10432","maturity":"poc","reliabilityScore":0.8,"verified":true,"type":null,"platforms":["multiple"],"requiresAuth":null,"exploitdb":{"verified":true,"type":"webapps","platform":"multiple","file":"exploits/multiple/webapps/10432.txt","codes":["CVE-2009-4501","CVE-2009-4499","CVE-2009-4498","OSVDB-60968","OSVDB-60966","OSVDB-60965"]},"metasploit":null}],"exploitCount":1,"weaknesses":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer","description":"The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.","type":"weakness","status":"Stable","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/119.html"}],"affected":[{"vendor":"debian","product":"zabbix","name":"zabbix","label":"zabbix","ecosystem":"Debian","cpePart":null,"purl":"pkg:deb/debian/zabbix","purlType":"deb","versions":[{"text":"< 1:1.8-1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:1.8-1","eol":null,"hubHref":null},{"vendor":"zabbix","product":"zabbix","name":"zabbix","label":"zabbix","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≤ 1.6.7","noFixRecorded":false,"fixedIn":null},{"text":"1.1.2","noFixRecorded":false,"fixedIn":null},{"text":"1.1.3","noFixRecorded":false,"fixedIn":null},{"text":"1.1.4","noFixRecorded":false,"fixedIn":null},{"text":"1.1.5","noFixRecorded":false,"fixedIn":null},{"text":"1.4.2","noFixRecorded":false,"fixedIn":null},{"text":"1.4.3","noFixRecorded":false,"fixedIn":null},{"text":"1.4.4","noFixRecorded":false,"fixedIn":null},{"text":"1.4.6","noFixRecorded":false,"fixedIn":null},{"text":"1.6.6","noFixRecorded":false,"fixedIn":null}],"versionsText":"≤ 1.6.7 | 1.1.2 | 1.1.3 | 1.1.4 | 1.1.5 | 1.4.2 | 1.4.3 | 1.4.4 | 1.4.6 | 1.6.6","eol":{"isEol":null,"eolDate":null,"matchMethod":"cpe","cycle":null,"product":{"name":"zabbix","label":"Zabbix","category":"server-app"}},"hubHref":"/vendor/zabbix/zabbix"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"http://www.securityfocus.com/archive/1/508436/30/60/threaded","label":"www.securityfocus.com/archive/1/508436/30/60/threaded","hostname":"www.securityfocus.com","tags":["Mailing List","X Refsource BUGTRAQ","Patch"]},{"url":"https://support.zabbix.com/browse/ZBX-1355","label":"support.zabbix.com/browse/ZBX-1355","hostname":"support.zabbix.com","tags":["X Refsource CONFIRM"]},{"url":"http://secunia.com/advisories/37740","label":"secunia.com/advisories/37740","hostname":"secunia.com","tags":["Third Party Advisory","X Refsource SECUNIA","Vendor Advisory"]},{"url":"http://www.vupen.com/english/advisories/2009/3514","label":"www.vupen.com/english/advisories/2009/3514","hostname":"www.vupen.com","tags":["VDB Entry","X Refsource VUPEN","Vendor Advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2009-4501","label":"security-tracker.debian.org/tracker/CVE-2009-4501","hostname":"security-tracker.debian.org","tags":["Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2009-12-31T18:00:00.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-09-17T01:37:01.050Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":32,"level":"medium","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-22T10:40:02.322Z","stale":false,"partial":false}}