TippingPoint Zero Day Initiative
 

Novell Netware NWFTPD RMD/RNFR/DELE Argument Parsing Remote Code Execution Vulnerabilities

ZDI-10-062: April 5th, 2010

CVE ID

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 6331. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Novell Netware NWFTPD daemon. Authentication or default anonymous access is required to exploit this vulnerability.

The specific flaw exists when parsing malformed arguments to the verbs RMD, RNFR, and DELE. Overly long parameters will result in stack based buffer overflows which can be leveraged to execute arbitrary code.

Vendor Response

Novell states:

A public fix for this issue has been released in download nwftpd16.zip, available at http://download.novell.com/patch/finder/


Disclosure Timeline

    2008-08-26 - Vulnerability reported to vendor
    2010-04-05 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Nick DeBaggis
    Francis Provencher