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Last updated: 5/25/2016 4:19:19 AM

CVE Publication rate: 20.5

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Vulnerability Workload Index: 12.31
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National Cyber Awareness System

Vulnerability Summary for CVE-2009-1786

Original release date: 05/26/2009
Last revised: 08/21/2010


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.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.9 MEDIUM
Impact Subscore: 10.0
Exploitability Subscore: 3.4
CVSS Version 2 Metrics:
Access Vector: Locally exploitable
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Provides administrator access, Allows complete confidentiality, integrity, and availability violation; Allows unauthorized disclosure of information; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: BID
Name: 35034
External Source: AIXAPAR
Name: IZ50500
External Source: AIXAPAR
Name: IZ50447
External Source: OVAL
Name: oval:org.mitre.oval:def:6276
External Source: AIXAPAR
Name: IZ50139
External Source: MILW0RM
Name: 9306
External Source: AIXAPAR
Name: IZ50445
External Source: VUPEN
Name: ADV-2009-1380
Type: Advisory
External Source: CONFIRM
Name: http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc
Type: Advisory; Patch Information
External Source: OSVDB
Name: 54617
External Source: AIXAPAR
Name: IZ50517
External Source: SECTRACK
Name: 1022261
Type: Patch Information
External Source: IDEFENSE
Name: 20090520 IBM AIX libc MALLOCDEBUG File Overwrite Vulnerability
External Source: AIXAPAR
Name: IZ50129
External Source: XF
Name: aix-mallocdebug-privilege-escalation(50636)
External Source: AIXAPAR
Name: IZ50121

References to Check Content

Identifier: oval:org.mitre.oval:def:6276
Check System: http://oval.mitre.org/XMLSchema/oval-definitions-5

Vulnerable software and versions

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Technical Details

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