CVE-2006-1652

HighPublished

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...

Published: Apr 6, 2006
Updated: Aug 7, 2024
Assigning CNA: mitre
Evidence observed: Apr 4, 2006

Primary CVSS

9.0/ 10High

nvd · CVSS 2.0

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

EPSS probability estimate

67.4%

High · next 30 days

Percentile: 99.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

UltraVNC 1.0.1 - Client Buffer Overflow (Metasploit)Exploit
Metasploit · windows · Apr 30, 2010
UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (1)Exploit
Luigi Auriemma · windows · Apr 4, 2006
UltraVNC 1.0.1 - Multiple Remote Error Logging Buffer Overflow Vulnerabilities (2)Exploit
Luigi Auriemma · windows · Apr 4, 2006

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