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Zero Day Initiative Advisory 10-294
Posted Dec 25, 2010
Authored by Tipping Point | Site zerodayinitiative.com

Zero Day Initiative Advisory 10-294 - This vulnerability allows remote attackers to execute arbitrary code on systems with vulnerable installations of multiple products from multiple vendors that utilize the Uni RPC protocol. Authentication is not required to exploit this vulnerability. The specific flaw exists in the Uni RPC service (unirpcd.exe) which listens by default on TCP port 31438. The unirpc32.dll module implements an RPC protocol and is used by the Uni RPC service. While parsing a size value from an RPC packet header, an integer can overflow and consequently bypass a signed comparison. This controlled value is then used as the number of bytes to receive into a static heap buffer. By providing a specially crafted request, this heap buffer can overflow leading to arbitrary code execution under the context of the SYSTEM user.

tags | advisory, remote, overflow, arbitrary, tcp, code execution, protocol
SHA-256 | 0208958c1064611e6f5ae2711eeae42691474fea4bbf89a18187ab50583f03d9

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