Rule: -- Sid: 337 -- Summary: This event is generated when a remote attacker attempts to exploit a buffer overflow vulnerability in the IBM AIX FTP daemon. -- Impact: Remote execution of arbitrary code leading to remote root compromise. -- Detailed Information: The IBM AIX 4.3.x FTP daemon contains a buffer overflow vulnerability. An attacker can send an overly long string in the CEL command, causing a buffer overflow condition and allowing the attacker to execute arbitrary code. -- Affected Systems: IBM AIX 4.3.x -- Attack Scenarios: An attacker sends a suspiciously large amount of data to the FTP server in the CEL command, causing a buffer overflow condition. The attacker can then execute arbitrary code to obtain root privileges. -- Ease of Attack: Simple. Exploits exist. -- False Positives: None known. -- False Negatives: None known. -- Corrective Action: Install the patch provided by IBM. See http://www-1.ibm.com/services/continuity/recover1.nsf/MSS/ERS-SVA-E01-1999.004.1/$file/sva004.txt for an advisory and information about obtaining the patch. -- Contributors: Original rule writer unknown Sourcefire Research Team Sourcefire Technical Publications Team Jen Harvey <jennifer.harvey@sourcefire.com> -- Additional References: IBM http://www-1.ibm.com/services/continuity/recover1.nsf/MSS/ERS-SVA-E01-1999.004.1/$file/sva004.txt --
