Insufficiently protected credentials in TeamViewer

Published: 2019-09-11 | Updated: 2019-11-07

Risk	Low
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2019-11769
CWE-ID	CWE-522
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software Subscribe	TeamViewer Client/Desktop applications / Other client software
Vendor	TeamViewer

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Insufficiently protected credentials

EUVDB-ID: #VU22560

Risk: Low

CVSSv3.1: 7.4 [CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H/E:P/RL:O/RC:C]

CVE-ID: CVE-2019-11769

CWE-ID: CWE-522 - Insufficiently Protected Credentials

Exploit availability: No

Description

The vulnerability allows a local attacker to obtain the administrator credentials.

The vulnerability exist due to the admin credentials in memory are stored in clear text. A local authenticated user can inject code into "Teamviewer.exe" which intercepts calls to GetWindowTextW and logs the processed credentials.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

TeamViewer: 0 - 14.4.208

External links

http://blog.to.com/advisory-teamviewer-cve-2019-11769-2/
http://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?type=label&labels=Security

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.