{"api_version":"1","generated_at":"2026-07-23T11:20:19+00:00","cve":"CVE-2009-1786","urls":{"html":"https://cve.report/CVE-2009-1786","api":"https://cve.report/api/cve/CVE-2009-1786.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2009-1786","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2009-1786"},"summary":{"title":"CVE-2009-1786","description":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable.","state":"PUBLISHED","assigner":"mitre","published_at":"2009-05-26 15:30:05","updated_at":"2026-04-23 00:35:47"},"problem_types":["CWE-362","n/a"],"metrics":[{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"6.9","severity":"","vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","data":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:C/I:C/A:C","baseScore":6.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"}}],"references":[{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50445","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50445","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802","name":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"-1","archivestatus":"404"},{"url":"http://www.vupen.com/english/advisories/2009/1380","name":"http://www.vupen.com/english/advisories/2009/1380","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"title":"Webmail : Solution de messagerie professionnelle - OVHcloud- OVH","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50447","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50447","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc","name":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Vendor Advisory"],"title":"","mime":"text/plain","httpstatus":"200","archivestatus":"200"},{"url":"http://securitytracker.com/id?1022261","name":"http://securitytracker.com/id?1022261","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch"],"title":"IBM AIX libc MALLOCDEBUG File Overwrite Bug Lets Local Users Gain Root Privileges - SecurityTracker","mime":"text/html","httpstatus":"200","archivestatus":"404"},{"url":"https://www.exploit-db.com/exploits/9306","name":"https://www.exploit-db.com/exploits/9306","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM AIX 5.3 libc MALLOCDEBUG File Overwrite Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50121","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50121","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50517","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50517","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50129","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50129","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://www.osvdb.org/54617","name":"http://www.osvdb.org/54617","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"","mime":"","httpstatus":"-1","archivestatus":"0"},{"url":"http://www.securityfocus.com/bid/35034","name":"http://www.securityfocus.com/bid/35034","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM AIX 'MALLOCDEBUG' File Overwrite Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50636","name":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50636","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM X-Force Exchange","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50500","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50500","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276","name":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Repository  /  Oval Repository","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50139","name":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50139","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"IBM notice: The page you requested cannot be displayed","mime":"text/html","httpstatus":"404","archivestatus":"404"},{"url":"http://secunia.com/advisories/35146","name":"http://secunia.com/advisories/35146","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Vendor Advisory"],"title":"IBM AIX libc MALLOCDEBUG Privilege Escalation Vulnerability - Secunia Advisories - Vulnerability Information - Secunia.com","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2009-1786","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2009-1786","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2009","cve_id":"1786","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"ibm","cpe5":"aix","cpe6":"5.3","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"},{"cve_year":"2009","cve_id":"1786","vulnerable":"1","versionEndIncluding":"","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"ibm","cpe5":"aix","cpe6":"6.1","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-07T05:27:54.273Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc"},{"name":"IZ50445","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50445"},{"name":"oval:org.mitre.oval:def:6276","tags":["vdb-entry","signature","x_refsource_OVAL","x_transferred"],"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276"},{"name":"IZ50447","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50447"},{"name":"54617","tags":["vdb-entry","x_refsource_OSVDB","x_transferred"],"url":"http://www.osvdb.org/54617"},{"name":"IZ50121","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50121"},{"name":"20090520 IBM AIX libc MALLOCDEBUG File Overwrite Vulnerability","tags":["third-party-advisory","x_refsource_IDEFENSE","x_transferred"],"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802"},{"name":"35034","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/35034"},{"name":"9306","tags":["exploit","x_refsource_EXPLOIT-DB","x_transferred"],"url":"https://www.exploit-db.com/exploits/9306"},{"name":"1022261","tags":["vdb-entry","x_refsource_SECTRACK","x_transferred"],"url":"http://securitytracker.com/id?1022261"},{"name":"ADV-2009-1380","tags":["vdb-entry","x_refsource_VUPEN","x_transferred"],"url":"http://www.vupen.com/english/advisories/2009/1380"},{"name":"aix-mallocdebug-privilege-escalation(50636)","tags":["vdb-entry","x_refsource_XF","x_transferred"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50636"},{"name":"IZ50517","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50517"},{"name":"35146","tags":["third-party-advisory","x_refsource_SECUNIA","x_transferred"],"url":"http://secunia.com/advisories/35146"},{"name":"IZ50500","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50500"},{"name":"IZ50129","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50129"},{"name":"IZ50139","tags":["vendor-advisory","x_refsource_AIXAPAR","x_transferred"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50139"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2009-05-19T00:00:00.000Z","descriptions":[{"lang":"en","value":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2017-09-28T12:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"tags":["x_refsource_CONFIRM"],"url":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc"},{"name":"IZ50445","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50445"},{"name":"oval:org.mitre.oval:def:6276","tags":["vdb-entry","signature","x_refsource_OVAL"],"url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276"},{"name":"IZ50447","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50447"},{"name":"54617","tags":["vdb-entry","x_refsource_OSVDB"],"url":"http://www.osvdb.org/54617"},{"name":"IZ50121","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50121"},{"name":"20090520 IBM AIX libc MALLOCDEBUG File Overwrite Vulnerability","tags":["third-party-advisory","x_refsource_IDEFENSE"],"url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802"},{"name":"35034","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/35034"},{"name":"9306","tags":["exploit","x_refsource_EXPLOIT-DB"],"url":"https://www.exploit-db.com/exploits/9306"},{"name":"1022261","tags":["vdb-entry","x_refsource_SECTRACK"],"url":"http://securitytracker.com/id?1022261"},{"name":"ADV-2009-1380","tags":["vdb-entry","x_refsource_VUPEN"],"url":"http://www.vupen.com/english/advisories/2009/1380"},{"name":"aix-mallocdebug-privilege-escalation(50636)","tags":["vdb-entry","x_refsource_XF"],"url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50636"},{"name":"IZ50517","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50517"},{"name":"35146","tags":["third-party-advisory","x_refsource_SECUNIA"],"url":"http://secunia.com/advisories/35146"},{"name":"IZ50500","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50500"},{"name":"IZ50129","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50129"},{"name":"IZ50139","tags":["vendor-advisory","x_refsource_AIXAPAR"],"url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50139"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2009-1786","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"n/a","version":{"version_data":[{"version_value":"n/a"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc","refsource":"CONFIRM","url":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc"},{"name":"IZ50445","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50445"},{"name":"oval:org.mitre.oval:def:6276","refsource":"OVAL","url":"https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6276"},{"name":"IZ50447","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50447"},{"name":"54617","refsource":"OSVDB","url":"http://www.osvdb.org/54617"},{"name":"IZ50121","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50121"},{"name":"20090520 IBM AIX libc MALLOCDEBUG File Overwrite Vulnerability","refsource":"IDEFENSE","url":"http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=802"},{"name":"35034","refsource":"BID","url":"http://www.securityfocus.com/bid/35034"},{"name":"9306","refsource":"EXPLOIT-DB","url":"https://www.exploit-db.com/exploits/9306"},{"name":"1022261","refsource":"SECTRACK","url":"http://securitytracker.com/id?1022261"},{"name":"ADV-2009-1380","refsource":"VUPEN","url":"http://www.vupen.com/english/advisories/2009/1380"},{"name":"aix-mallocdebug-privilege-escalation(50636)","refsource":"XF","url":"https://exchange.xforce.ibmcloud.com/vulnerabilities/50636"},{"name":"IZ50517","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50517"},{"name":"35146","refsource":"SECUNIA","url":"http://secunia.com/advisories/35146"},{"name":"IZ50500","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50500"},{"name":"IZ50129","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50129"},{"name":"IZ50139","refsource":"AIXAPAR","url":"http://www.ibm.com/support/docview.wss?uid=isg1IZ50139"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2009-1786","datePublished":"2009-05-26T15:16:00.000Z","dateReserved":"2009-05-26T00:00:00.000Z","dateUpdated":"2024-08-07T05:27:54.273Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2009-05-26 15:30:05","lastModifiedDate":"2026-04-23 00:35:47","problem_types":["CWE-362","n/a"],"metrics":{"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:C/I:C/A:C","baseScore":6.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"COMPLETE","integrityImpact":"COMPLETE","availabilityImpact":"COMPLETE"},"baseSeverity":"MEDIUM","exploitabilityScore":3.4,"impactScore":10,"acInsufInfo":false,"obtainAllPrivilege":true,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:ibm:aix:5.3:*:*:*:*:*:*:*","matchCriteriaId":"EA8DDF4A-1C5D-4CB1-95B3-69EAE6572507"},{"vulnerable":true,"criteria":"cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*","matchCriteriaId":"FD518B94-9CD7-4C45-8766-578CF427B4CF"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2009","CveId":"1786","Ordinal":"1","Title":"CVE-2009-1786","CVE":"CVE-2009-1786","Year":"2009"},"notes":[{"CveYear":"2009","CveId":"1786","Ordinal":"1","NoteData":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite arbitrary files via a symlink attack on the log file associated with the MALLOCDEBUG environment variable.","Type":"Description","Title":"CVE-2009-1786"},{"CveYear":"2009","CveId":"1786","Ordinal":"2","NoteData":"2009-05-26","Type":"Other","Title":"Published"},{"CveYear":"2009","CveId":"1786","Ordinal":"3","NoteData":"2017-09-28","Type":"Other","Title":"Modified"}]}}}