Stack Buffer Overflow in UltraVNC by UltraVNC Team
CVE-2019-8276

7.5HIGH

Key Information:

Vendor
Kaspersky
Status
Ultravnc
Vendor
CVE Published:
8 March 2019

Summary

UltraVNC revision 1211 contains a stack buffer overflow vulnerability within the VNC server code, specifically in the file transfer request handler. Exploitation of this vulnerability can lead to Denial of Service (DoS) attacks, where the server may become unresponsive. The vulnerability can be triggered through network connectivity, highlighting the importance of securing network interfaces. This issue has been addressed and resolved in revision 1212.

Affected Version(s)

UltraVNC 1.2.2.3

References

https://ics-cert.kaspersky.com/advisories/klcert-advisori...
x_refsource_MISC
https://cert-portal.siemens.com/productcert/pdf/ssa-92709...
x_refsource_CONFIRM
https://www.us-cert.gov/ics/advisories/icsa-20-161-06
x_refsource_MISC

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.