PT-2005-1609 · Microsoft · Exchange Server

Ben Layer

+1

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Published

2005-04-13

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Updated

2025-09-22

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CVE-2005-0560

CVSS v2.0

7.5

High

VectorAV:N/AC:L/Au:N/C:P/I:P/A:P
Name of the Vulnerable Software and Affected Versions Exchange Server versions 2000 through 2003
Description A heap-based buffer overflow issue exists in the SvrAppendReceivedChunk function in xlsasink.dll, which is part of the SMTP service. This allows remote attackers to execute arbitrary code by sending a crafted X-LINK2STATE extended verb request to the SMTP port.
Recommendations For Exchange Server versions 2000 through 2003, consider restricting access to the SMTP port until a fix is available. As a temporary workaround, disabling the xlsasink.dll module may help minimize the risk of exploitation.

Exploit

Fix

RCE

Memory Corruption

Weakness Enumeration

Related Identifiers

CVE-2005-0560

Affected Products

Exchange Server