Heap Buffer Overflow in UltraVNC Client Code by UltraVNC
CVE-2019-8258

9.8CRITICAL

Key Information:

Vendor

Ultravnc

Status
Ultravnc
Vendor
CVE Published:
5 March 2019

What is CVE-2019-8258?

A heap buffer overflow vulnerability exists in the VNC client code of UltraVNC revision 1198, which could allow an attacker to execute arbitrary code. This vulnerability can be exploited remotely through network connectivity, potentially compromising the affected system. The issue has been addressed in revision 1199, which mitigates the risk associated with this vulnerability.

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:
9.8
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.