IBM AIX ftp domacro() buffer overflow
| aix-ftp-domacro-bo (38162) |  High Risk |
Description:
IBM AIX is vulnerable to a buffer overflow, caused by improper bounds checking by the domacro() function in the ftp client. By sending a specially-crafted command-line argument, a local attacker could overflow a buffer and execute arbitrary code on the system with root privileges.
Platforms Affected:
- IBM, AIX 5.2
- IBM, AIX 5.3
Remedy:
For AIX 5.2.0:
Apply APAR IZ05487, available from the IBM Quick Links Web site. See References.
For AIX 5.3.0:
Apply APAR IZ05488, available from the IBM Quick Links Web site. See References.
--OR--
Apply the interim fix for this vulnerability (ftp_ifix.tar.Z), available from the IBM AIX FTP site. See References.
Consequences:
Gain Privileges
References:
- IBM AIX FTP site, Index of ftp://aix.software.ibm.com/aix/efixes/security/ at ftp://aix.software.ibm.com/aix/efixes/security/.
- IBM Quick Links Web site, Quick links for AIX fixes at http://www.ibm.com/servers/eserver/support/unixservers/aixfixes.html.
- IBM SECURITY ADVISORY: Wed Oct 24 11:34:55 CDT 2007, AIX ftp buffer overflow vulnerability at http://www14.software.ibm.com/webapp/set2/subscriptions/ijhifoeblist?mode=7&heading=AIX53&path=%2F200709%2FSECURITY%2F20070905%2Fdatafile101815&label=AIX+uucp+UNIX-to-UNIX+Copy+Buffer+Overflow+Vulnerability.
- iDefense PUBLIC ADVISORY: 10.30.07, IBM AIX ftp domacro Parameter Buffer Overflow Vulnerability at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=616.
- BID-26260: IBM AIX ftp Local Privilege Escalation Vulnerability
- CVE-2007-4217: Stack-based buffer overflow in the domacro function in ftp in IBM AIX 5.2 and 5.3 allows local users to gain privileges via a long parameter to a macro, as demonstrated by executing a macro via the '$' 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 30, 2007
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