User Enumeration Vulnerability in ConnectWise Control by ConnectWise
CVE-2019-16516

5.3MEDIUM

Key Information:

Vendor

Connectwise
Status
Control
Vendor
CVE Published:
23 January 2020

Badges

👾 Exploit Exists🟡 Public PoC🟣 EPSS 38%

What is CVE-2019-16516?

ConnectWise Control has a vulnerability that permits an unauthenticated attacker to ascertain if usernames are valid within the system. This user enumeration issue allows malicious actors to exploit account information, potentially leading to targeted attacks against specific accounts. By iterating through usernames, an attacker can confirm existence, which could facilitate further security breaches.

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Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

ScreenConnect-UserEnum
Created by czz

References

https://know.bishopfox.com/advisories
x_refsource_MISC
https://know.bishopfox.com/advisories/connectwise-control
x_refsource_MISC
https://blog.huntresslabs.com/validating-the-bishop-fox-f...
x_refsource_MISC

EPSS Score

38% chance of being exploited in the next 30 days.

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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