IBM AIX ftp gets() buffer overflow
| aix-ftp-bo (35627) |  High Risk |
Description:
IBM AIX is vulnerable to multiple stack-based buffer overflows in the ftp client, caused by improper bounds checking by the gets() function. By sending multiple calls to the gets() function, 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:
Apply the interim fix for this vulnerability (ftpgets_ifix.tar.Z), available from the IBM AIX FTP site. See References.
Consequences:
Gain Privileges
References:
- IBM AIX FTP site, Index of /aix/efixes/security at http://aix.software.ibm.com/aix/efixes/security/.
- IBM SECURITY ADVISORY Tue Jul 24 10:03:54 CDT 2007, AIX ftp gets() Buffer Overflow Vulnerabilities at http://www14.software.ibm.com/webapp/set2/subscriptions/ijhifoeblist?mode=7&heading=AIX53&path=%2F200707%2FSECURITY%2F20070726%2Fdatafile095634&label=AIX+ftp+gets%28%29+Buffer+Overflow+Vulnerabilities.
- iDefense Labs PUBLIC ADVISORY: 07.26.07, IBM AIX ftp gets() Multiple Buffer Overflow Vulnerabilities at http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=571.
- BID-25077: IBM AIX FTP Client Local Buffer Overflow Vulnerability
- CVE-2007-4004: Buffer overflow in the ftp client in IBM AIX 5.3 SP6 and 5.2.0 allows local users to execute arbitrary code via unspecified vectors that trigger the overflow in a gets function call. NOTE: the client is setuid root on AIX, so this issue crosses privilege boundaries.
- SA26219: IBM AIX Multiple Privilege Escalation Vulnerabilities
- SECTRACK ID: 1018465: IBM AIX Buffer Overflow in ftp Command Lets Local Users Gain Elevated Privileges
- VUPEN/ADV-2007-2675: IBM AIX ftp Utility gets() Function Multiple Local Buffer Overflow Vulnerabilities
Reported:
Jul 26, 2007
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