TippingPoint Zero Day Initiative
 

Sybase OneBridge Mobile Data Suite Format String Remote Code Execution Vulnerability

ZDI-11-171: June 3rd, 2011

CVSS Score

Affected Vendors

    Sybase

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 11288. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Sybase OneBridge Mobile Data Suite. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the iMailGatewayService server process (ECTrace.dll) which listens for encrypted requests by default on TCP port 993 (IMAP) and port 587 (SMTP). The process fails to properly sanitize malformed user string inputs before passing to the authentication logging function. By providing a specially crafted string with format specifiers this can be leveraged to trigger a format string vulnerability which can lead to arbitrary code execution in the context of the server process.

Vendor Response

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

Disclosure Timeline

    2011-01-21 - Vulnerability reported to vendor
    2011-06-03 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Luigi Auriemma