TippingPoint Digital Vaccine Laboratories
DID YOU KNOW... Most phishing sites are hosted on compromised Apache + PHP + MySQL servers located in the US. Our Digital Vaccine service includes filters specifically designed to prevent potential victims from reaching many of these malicious sites.

Samba NDR PULL EVENTLOG ReportEventAndSourceW Heap Overflow Remote Code Execution Vulnerability

TPTI-12-04: June 29th, 2012

CVE ID

Affected Vendors

    Samba

Affected Products

    3.6.x

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

Credit

This vulnerability was discovered by:
    Brian Gorenc
    HP DVLabs