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Improper Restriction of Operations within the Bounds of a Memory Buffer


Severity High
Score 7.2/10


The OAmon.sys kernel driver and earlier in Tall Emu Online Armor Personal Firewall AV+ before, and Personal Firewall 3.5 before, allows local users to gain privileges via crafted METHOD_NEITHER IOCTL requests to \Device\OAmon containing arbitrary kernel addresses, as demonstrated using the 0x830020C3 IOCTL.

  • 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