UltraVNC VNCLog Buffer Overflow
Severity: CRITICAL
CVE Identifier: CVE-2006-1652
Advisory Date: FEB 15, 2011
DESCRIPTION
Multiple buffer overflows in (a) UltraVNC (aka Ultr@VNC) 1.0.1
and earlier and (b) tabbed_viewer 1.29 (1) allow user-assisted remote attackers
to execute arbitrary code via a malicious server that sends a long string to a
client that connects on TCP port 5900, which triggers an overflow in
Log::ReallyPrint; and (2) allow remote attackers to cause a denial of service
(server crash) via a long HTTP GET request to TCP port 5800, which triggers an
overflow in VNCLog::ReallyPrint.
TREND MICRO PROTECTION INFORMATION
There are two separate vulnerabilities here; One allows escalated privileges to authenticated users, the other allows remote unauthenticated users to cause a Denial of Service (DoS).
SOLUTION
Trend Micro Deep Security DPI Rule Number: 1000419
Trend Micro Deep Security DPI Rule Name: 1000419 - UltraVNC VNCLog Buffer Overflow
AFFECTED SOFTWARE AND VERSION
- Ultr@VNC VNC Viewer 1.0.1
- Ultr@VNC tabbed_viewer 1.29
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