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Improper Restriction of Operations within the Bounds of a Memory Buffer


Severity High
Score 9.3/10


Buffer overflow in xlssr.dll in the Autonomy KeyView XLS viewer (aka File Viewer for Excel), as used in IBM Lotus Notes 5.x through 8.5.x, Symantec Mail Security, Symantec BrightMail Appliance, Symantec Data Loss Prevention (DLP), and other products, allows remote attackers to execute arbitrary code via a crafted .xls spreadsheet attachment.

  • 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