ZDI-07-033: Samba lsa_io_trans_names Heap Overflow Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-07-033.html May 15, 2007
-- CVE ID: CVE-2007-2446
-- Affected Vendor: Samba
-- Affected Products: Samba 3.0.0 - 3.0.25rc3
-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability since May 14, 2007 by Digital Vaccine protection filter ID 5349. For further product information on the TippingPoint IPS:
-- Vulnerability Details: This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Samba. User interaction is not required to exploit this vulnerability.
The specific flaw exists in the parsing of RPC requests to the LSA RPC interface. When parsing a request to LsarLookupSids/LsarLookupSids2, heap allocation is calculated based on user input. By specifying invalid values, heap blocks can be overwritten leading to remote code execution.
-- Vendor Response: Samba has issued an update to correct this vulnerability. More details can be found at:
-- Disclosure Timeline: 2007.05.04 - Vulnerability reported to vendor 2007.05.14 - Digital Vaccine released to TippingPoint customers 2007.05.15 - Coordinated public release of advisory
-- Credit: This vulnerability was discovered by an anonymous researcher.
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