Out-of-Bounds Read Vulnerability in UltraVNC by UltraVNC
CVE-2019-8261

9.8CRITICAL

Key Information:

Vendor

Ultravnc

Status
Ultravnc
Vendor
CVE Published:
5 March 2019

What is CVE-2019-8261?

UltraVNC revision 1199 contains an out-of-bounds read vulnerability within the VNC code, specifically in the CoRRE decoder. This issue is caused by a multiplication overflow, allowing attackers to potentially exploit this vulnerability via network connectivity. The vulnerability has been addressed in revision 1200, which mitigates the risks associated with this flaw.

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

.