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Improper Restriction of Operations within the Bounds of a Memory Buffer


Severity High
Score 7.5/10


Stack-based buffer overflow in the IceWarpServer.APIObject ActiveX control in api.dll in IceWarp Merak Mail Server 9.4.1 might allow context-dependent attackers to execute arbitrary code via a large value in the second argument to the Base64FileEncode method, as possibly demonstrated by a web application that accepts untrusted input for this method.

  • LOW
  • NONE

CWE-119 - Buffer Overflow

Buffer overflow attacks involve data transit and operations exceeding the restricted memory buffer, thereby corrupting or overwriting data in adjacent memory locations. Such overflow allows the attacker to run arbitrary code or manipulate the existing code to cause privilege escalation, data breach, denial of service, system crash and even complete system compromise. Given that languages such as C and C++ lack default safeguards against overwriting or accessing data in their memory, applications utilizing these languages are most susceptible to buffer overflows attacks.


Advisory Timeline

  • Published