MultipleVNC Integer Overflow Vulnerability
Severity: CRITICAL
CVE Identifier: CVE-2009-0388
Advisory Date: FEB 15, 2011
DESCRIPTION
Multiple integer signedness errors in (1) UltraVNC 1.0.2 and 1.0.5 and (2) TightVnc 1.3.9 allow remote VNC servers to cause a denial of service (heap corruption and application crash) or possibly execute arbitrary code via a large length value in a message, related to the (a) ClientConnection::CheckBufferSize and (b) ClientConnection::CheckFileZipBufferSize functions in ClientConnection.cpp.
TREND MICRO PROTECTION INFORMATION
Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.
SOLUTION
Trend Micro Deep Security DPI Rule Number: 1003290
Trend Micro Deep Security DPI Rule Name: 1003290 - TightVNC VNCViewer Authenticate Buffer Overflow
AFFECTED SOFTWARE AND VERSION
- Tightvnc Tightvnc 1.3.9
- Ultravnc Ultravnc 1.0.2
- Ultravnc Ultravnc 1.0.5