{"id":"CVE-2009-1786","aliases":["EUVD-2009-1781","GHSA-qx62-xcvw-248x"],"status":"published","title":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite...","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.","severity":{"version":"2.0","score":6.9,"vector":"AV:L/AC:M/Au:N/C:C/I:C/A:C","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.00666,"percentile":0.52135,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-362"],"published":"2009-05-26T15:16:00Z","modified":"2026-06-16T23:08:03Z","exploits":[{"source":"exploitdb","id":"EDB-33001","title":"Kingsoft Webshield 1.1.0.62 - Cross-Site Scripting / Remote Command Execution","type":"webapps","platform":"php","date":"2009-05-20","verified":true,"url":"https://www.exploit-db.com/exploits/33001"}],"products":[{"vendor":"ibm","product":"aix"}],"references":[{"url":"http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc","tags":["x_refsource_CONFIRM","x_transferred","Patch","Vendor 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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.","status":"published","published":"2009-05-26T15:16:00Z","modified":"2024-08-07T05:27:54.273Z","updated_at":"2026-11-02T14:33:25.516454Z"}],"euvd":[{"id":"EUVD-2009-1781","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.","status":"published","published":"2009-05-26T15:16:00Z","modified":"2024-08-07T05:27:54Z","updated_at":"2026-11-03T01:39:20.465485Z"}],"ghsa":[{"id":"GHSA-qx62-xcvw-248x","title":"The malloc subsystem in libc in IBM AIX 5.3 and 6.1 allows local users to create or overwrite...","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 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