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UltraVNC ClientConnection Multiple Integer Overflow Vulnerabilities (Windows)

Information

Severity

Severity

Critical

Family

Family

Buffer overflow

CVSSv2 Base

CVSSv2 Base

10.0

CVSSv2 Vector

CVSSv2 Vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Solution Type

Solution Type

Vendor Patch

Created

Created

15 years ago

Modified

Modified

4 years ago

Summary

This host is running UltraVNC and is prone to Multiple Integer Overflow Vulnerability.

Insight

Insight

Multiple Integer Overflow due to signedness errors within the functions ClientConnection::CheckBufferSize and ClientConnection::CheckFileZipBufferSize in ClientConnection.cpp file fails to validate user input.

Affected Software

Affected Software

UltraVNC version prior to 1.0.5.4 on Windows.

Solution

Solution

Upgrade to the latest version 1.0.5.4.

Common Vulnerabilities and Exposures (CVE)