IBM AIX bellmail buffer overflow
| aix-bellmail-bo (38150) |  High Risk |
Description:
IBM AIX bellmail is vulnerable to a stack-based buffer overflow, caused by improper bounds checking by the sendrmt function. By sending an overly long parameter using the "m" command, a local attacker could exploit this vulnerability to corrupt memory and execute arbitrary code on the system.
Platforms Affected:
- IBM, AIX 5.2
- IBM, AIX 5.3
Remedy:
For AIX 5.2.0:
Apply APAR IZ05066, available from the IBM Quick Links Web site. See References.
For AIX 5.3.0:
Apply APAR IZ05065, available from the IBM Quick Links Web site. See References.
--OR--
Apply the interim fix for this vulnerability (bellmail_ifix.tar), available from the IBM AIX FTP site. See References.
Consequences:
Gain Privileges
References:
- IBM AIX FTP site, IBM AIX at ftp://aix.software.ibm.com/aix/efixes/security/.
- IBM APAR IZ05065, POTENTIAL SECURITY ISSUE. at http://www-1.ibm.com/support/docview.wss?uid=isg1IZ05065.
- IBM APAR IZ05066, POTENTIAL SECURITY ISSUE. at http://www-1.ibm.com/support/docview.wss?uid=isg1IZ05066.
- IBM SECURITY ADVISORY, AIX bellmail buffer overflow vulnerability at http://www14.software.ibm.com/webapp/set2/subscriptions/ijhifoeblist?mode=7&heading=AIX53&path=%2F200710%2FSECURITY%2F20071030%2Fdatafile094529&label=AIX+bellmail+buffer+overflow+vulnerability.
- iDefense PUBLIC ADVISORY: 10.30.07, IBM AIX bellmail Stack Buffer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=617.
- BID-26257: IBM AIX bellmail Local Privilege Escalation Vulnerability
- CVE-2007-4623: Stack-based buffer overflow in the sendrmt function in bellmail in IBM AIX 5.2 and 5.3 allows local users to execute arbitrary code via a long parameter to the m command.
- FrSIRT/ADV-2007-3669: IBM AIX Utilities Arguments Handling Privilege Escalation Vulnerabilities
- SA27437: IBM AIX Multiple Privilege Escalation Vulnerabilities
- SECTRACK ID: 1018871: IBM AIX Various Application Buffer Overflows Let Local Users Gain Root Privileges
Reported:
Oct 25, 2007
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