ID CVE-2009-1786
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:o:ibm:aix:5.3:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:aix:5.3:*:*:*:*:*:*:*
  • cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
    cpe:2.3:o:ibm:aix:6.1:*:*:*:*:*:*:*
CVSS
Base: 6.9 (as of 29-09-2017 - 01:34)
Impact:
Exploitability:
CWE CWE-362
CAPEC
  • Leveraging Race Conditions
    The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with his version and cause the system to read the malicious file.
  • Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
    This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.
Access
VectorComplexityAuthentication
LOCAL MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
COMPLETE COMPLETE COMPLETE
cvss-vector via4 AV:L/AC:M/Au:N/C:C/I:C/A:C
oval via4
accepted 2009-08-31T04:00:09.685-04:00
class vulnerability
contributors
name Aharon Chernin
organization DTCC
definition_extensions
  • comment IBM AIX 5300-00 is installed
    oval oval:org.mitre.oval:def:6195
  • comment IBM AIX 5300-01 through 5300-06 is installed
    oval oval:org.mitre.oval:def:5973
  • comment IBM AIX 5300-07 is installed
    oval oval:org.mitre.oval:def:5707
  • comment IBM AIX 5300-08 is installed
    oval oval:org.mitre.oval:def:5293
  • comment IBM AIX 5300-09 is installed
    oval oval:org.mitre.oval:def:6306
  • comment IBM AIX 6100-00 is installed
    oval oval:org.mitre.oval:def:5589
  • comment IBM AIX 6100-01 is installed
    oval oval:org.mitre.oval:def:5959
  • comment IBM AIX 6100-02 is installed
    oval oval:org.mitre.oval:def:5685
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.
family unix
id oval:org.mitre.oval:def:6276
status accepted
submitted 2009-07-18T15:10:44.000-05:00
title Malloc subsystem in libc in IBM AIX 5.3 and 6.1 vulnerability.
version 43
refmap via4
aixapar
  • IZ50121
  • IZ50129
  • IZ50139
  • IZ50445
  • IZ50447
  • IZ50500
  • IZ50517
bid 35034
confirm http://aix.software.ibm.com/aix/efixes/security/libc_advisory.asc
exploit-db 9306
idefense 20090520 IBM AIX libc MALLOCDEBUG File Overwrite Vulnerability
osvdb 54617
sectrack 1022261
secunia 35146
vupen ADV-2009-1380
xf aix-mallocdebug-privilege-escalation(50636)
Last major update 29-09-2017 - 01:34
Published 26-05-2009 - 15:30
Last modified 29-09-2017 - 01:34
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