Improper Input Validation in UltraVNC Repeater Affects Remote Desktop Functionality
CVE-2016-5673

7.5HIGH

Key Information:

Vendor

Ultravnc

Status
Repeater
Vendor
CVE Published:
25 August 2016

What is CVE-2016-5673?

The UltraVNC Repeater software prior to version 1300 lacks proper restrictions on destination IP addresses and TCP ports. This flaw enables remote attackers to exploit the software by using a specific substring format, potentially gaining open-proxy capabilities. This vulnerability exposes systems to unauthorized remote access and may lead to further exploitation if not addressed.

References

http://www.kb.cert.org/vuls/id/BLUU-A9WQVP
x_refsource_CONFIRM
http://www.kb.cert.org/vuls/id/735416
third-party-advisoryx_refsource_CERT-VN
http://www.securityfocus.com/bid/92348
vdb-entryx_refsource_BID

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.