Samba ndr_pull_dfs_Info3 Heap Overflow Remote Code Execution VulnerabilityZDI-12-061: April 18th, 2012
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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 DFS INFO3 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.
Vendor ResponseSamba has issued an update to correct this vulnerability. More details can be found at:
2011-10-20 - Vulnerability reported to vendor
2012-04-18 - Coordinated public release of advisory
CreditThis vulnerability was discovered by: