HTTP: UltraVNC VNCLog Buffer Overflow
This signature detects attempts to exploit a known vulnerability in the UltraVNC server. A successful attack can lead to a buffer overflow and arbitrary remote code execution within the context of the affected application.
Extended Description
UltraVNC is susceptible to multiple error-logging remote buffer-overflow vulnerabilities. These issues are due to the application's failure to properly bounds-check user-supplied input before copying it to insufficiently sized memory buffers. A successful attack may allow remote attackers to execute arbitrary code on a vulnerable computer to gain unauthorized access in the context of the application.
Affected Products
Ultravnc ultr@vnc
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Ultravnc
9.0