Stack-Based Buffer Overflow in UltraVNC from Ultracool Software
CVE-2019-8263

6.5MEDIUM

Key Information:

Vendor
Kaspersky
Status
Ultravnc
Vendor
CVE Published:
5 March 2019

Summary

UltraVNC revision 1205 is susceptible to a stack-based buffer overflow vulnerability within its VNC client code, specifically in the ShowConnInfo routine. This flaw can potentially lead to a denial of service (DoS), and while user interaction is necessary to initiate the exploitation, the attack is reachable over network connections. The issue has been addressed and resolved in revision 1206.

Affected Version(s)

UltraVNC 1.2.2.3

References

https://ics-cert.kaspersky.com/advisories/klcert-advisori...
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https://ics-cert.kaspersky.com/advisories/klcert-advisori...
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https://cert-portal.siemens.com/productcert/pdf/ssa-92709...
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CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.