Samba NDR PULL SVCCTL StartServiceW Heap Overflow Remote Code Execution Vulnerability

April 18th, 2012
ZDI-12-063 ZDI-CAN-1537

CVE ID

CVE-2012-1182

CVSS Score

10.0 AV:N/AC:L/Au:N/C:C/I:C/A:C

Affected Vendors

Samba

Affected Products

3.6.x

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 a NDR PULL SVCCTL StartServiceW request. 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.

Additional Details

Samba has issued an update to correct this vulnerability. More details can be found at:
http://www.samba.org/samba/security/CVE-2012-1182

Disclosure Timeline

  • 2011-10-20 - Vulnerability reported to vendor
  • 2012-04-18 - Coordinated public release of advisory

Credit

Anonymous

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