Public Vulnerability Reports

EMC RepliStor Multiple Heap Overflow Vulnerabilities



EMC RepliStor is a data backup and recovery application for Windows. For more information, visit the vendor's website at the following URL.


Remote exploitation of multiple heap overflow vulnerabilities in EMC Corp.'s RepliStor could allow an unauthenticated attacker to execute arbitrary code with SYSTEM privileges.

Multiple vulnerabilities exist within the code responsible for compression. In each case, data is decompressed without consideration for the size of the destination buffer. This results in an exploitable heap overflow.


Exploitation of these vulnerabilities results in the execution of arbitrary code with the privileges of the RepliStor Server or Control Server, usually SYSTEM. In order to exploit these vulnerabilities, an attacker needs to be able to connect to the targeted server on TCP port 7144 or 7145. No authentication is required to reach the vulnerable code paths.


iDefense has confirmed the existence of these vulnerabilities in EMC RepliStor version 6.2 SP2. Previous versions may also be affected.


iDefense is currently unaware of any effective workaround for this issue.


"EMC has issued updates to address this issue. EMC customers can view more details on by searching the knowledge base for support solution emc179808 or they can contact EMC Software Technical Support at 1-877-534-2867."


The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-6426 to this issue. This is a candidate for inclusion in the CVE list (, which standardizes names for security problems.


12/18/2007 Initial vendor notification
12/18/2007 Initial vendor response
02/19/2008 Coordinated public disclosure


This vulnerability was reported to iDefense by Stephen Fewer of Harmony Security (

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Copyright © 2008 Verisign, Inc.

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