Heap Buffer Overflow in UltraVNC by UltraVNC Team
CVE-2019-8271

9.8CRITICAL

Key Information:

Vendor

Kaspersky
Status
Ultravnc
Vendor
CVE Published:
8 March 2019

What is CVE-2019-8271?

UltraVNC revision 1211 is susceptible to a heap buffer overflow vulnerability in the VNC server code specifically within the file transfer handler. This weakness could allow an attacker to execute arbitrary code, given successful exploitation through network connectivity. To mitigate this risk, users should upgrade to revision 1212, where this vulnerability has been addressed.

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

.
CVE-2019-8271 : Heap Buffer Overflow in UltraVNC by UltraVNC Team