CVE-2019-16516: An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185

Medium severity · published Jan 23, 2020

CVE-2019-16516

An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185

5.3

CVSS

19.1%

EPSS

On KEV

Description

An issue was discovered in ConnectWise Control (formerly known as ScreenConnect) 19.3.25270.7185. There is a user enumeration vulnerability, allowing an unauthenticated attacker to determine with certainty if an account exists for a given username.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack vector

Network

Complexity

Low

Privileges

None

User interaction

None

Confidentiality

Low

Integrity

None

Availability

None

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)19.1% · higher than 97% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

ScreenConnect · ConnectWise

through 19.2.24707; 19.3.25270.7185 · source: NVD

Affected product

ScreenConnect

ConnectWise

All ScreenConnect CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2019-16516

CVE.org

https://www.cve.org/CVERecord?id=CVE-2019-16516

Exploit

http://packetstormsecurity.com/files/165432/ConnectWise-Control-19.2.24707-Username-Enumeration.html

Exploit

https://blog.huntresslabs.com/validating-the-bishop-fox-findings-in-connectwise-control-9155eec36a34

Third Party Advisory

https://know.bishopfox.com/advisories

Exploit

https://know.bishopfox.com/advisories/connectwise-control

Third Party Advisory

https://www.crn.com/news/managed-services/connectwise-control-msp-security-vulnerabilities-are-severe-bishop-fox

Third Party Advisory

https://www.crn.com/slide-shows/managed-services/connectwise-control-attack-chain-exploit-20-questions-for-security-researcher-bishop-fox