Published: 04/02/2009 Updated: 11/10/2018

CVSS v2 Base Score: 10 | Impact Score: 10 | Exploitability Score: 10

VMScore: 1000

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

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.

Vulnerable Product	Search on Vulmon	Subscribe to Product
tightvnc tightvnc 1.3.9
ultravnc ultravnc 1.0.2
ultravnc ultravnc 1.0.5

TightVNC authentication failure integer overflow proof of concept exploit ...

#!/usr/bin/env python #digitaldesi@incom # Modified Andres Lopez Luksenberg's exploit for Authentication Failure scenario in TightVNC BID 33569 CVE-2009-0388 import socket serversocket = socketsocket(socketAF_INET, socketSOCK_STREAM) serversocketbind(('', 5900)) serversocketlisten(1) while True: clientsocket, clientaddres = serverso ...

#!/usr/bin/env python # POC: Multiple VNC Clients Multiple Integer Overflow Vulnerabilities(UltraVNC and TightVNC), BID 33568 #Author: Andres Lopez Luksenberg <polakocai@gmailcom> (Visit: 2086616113/~andres/) # import socket serversocket = socketsocket(socketAF_INET, socketSOCK_STREAM) serversocketbind(('', 5900)) serversocket ...

CWE-189 http://vnc-tight.svn.sourceforge.net/viewvc/vnc-tight?view=rev&revision=3564 http://www.securityfocus.com/bid/33568 http://www.coresecurity.com/content/vnc-integer-overflows http://secunia.com/advisories/33807 http://forum.ultravnc.info/viewtopic.php?t=14654 http://www.vupen.com/english/advisories/2009/0321 http://www.vupen.com/english/advisories/2009/0322 https://www.exploit-db.com/exploits/8024 https://www.exploit-db.com/exploits/7990 http://www.securityfocus.com/archive/1/500632/100/0/threaded https://nvd.nist.gov https://packetstormsecurity.com/files/74789/TightVNC-Integer-Overflow.html https://www.exploit-db.com/exploits/8024/

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CVE-2009-0388

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