TippingPoint Digital Vaccine Laboratories
DID YOU KNOW... In December of 2007, Microsoft released seven security bulletins which fixed 11 new security vulnerabilities. TippingPoint and ZDI were credited with discovering a total of four of those vulnerabilities.

Samba NDR PULL EVENTLOG ReportEventAndSourceW Heap Overflow Remote Code Execution Vulnerability

TPTI-12-04: June 29th, 2012


Affected Vendors


Affected Products


TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 12238. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samba. Authentication is not required to exploit this vulnerability.

The specific flaw exists within Samba's handling of NDR PULL EVENTLOG ReportEventAndSourceW requests. By sending a specially crafted packet, it is possible to cause Samba to use a different size for memory allocation than it uses for a memory copy loop. This can result in memory corruption, and may be exploited by an attacker to gain remote code execution.

Vendor Response

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

Disclosure Timeline

    2011-09-29 - Vulnerability reported to vendor
    2012-06-29 - Coordinated public release of advisory


This vulnerability was discovered by:
    Brian Gorenc
    HP DVLabs