TippingPoint Zero Day Initiative

Ipswitch WS_FTP Server Checksum Command Parsing Buffer Overflow Vulnerabilities

ZDI-06-029: September 26th, 2006

CVE ID

Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Ipswitch WS_FTP Server. Anonymous access or authentication is required to exploit this vulnerability.

The specific flaw exists due to a lack of bounds checking during the parsing of long string arguments to the 'XCRC', 'XSHA1' and 'XMD5' commands leading to a stack overflow vulnerability. Exploitation requires valid or anonymous FTP server credentials.

Vendor Response

Ipswitch has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2006-09-01 - Vulnerability reported to vendor
    2006-09-26 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Anonymous