#VU27102 Use of Hard-coded Cryptographic Key in TeamViewer Remote Full Client for Windows - CVE-2019-18988
Published: April 22, 2020 / Updated: February 20, 2022
Vulnerability identifier: #VU27102
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:A/U:Clear
CVE-ID: CVE-2019-18988
CWE-ID: CWE-321
Exploitation vector: Local access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
TeamViewer Remote Full Client for Windows
TeamViewer Remote Full Client for Windows
Software vendor:
TeamViewer
TeamViewer
Description
The vulnerability allows a local user to decrypt stored credentials.
The vulnerability exists due to application is using the same AES key for all installations to encrypt stored proxy and options password. A local user with access to he system can use the hard-coded key to decrypt credentials.
Remediation
Install updates from vendor's website.
External links
- https://community.teamviewer.com/t5/Announcements/Specification-on-CVE-2019-18988/td-p/82264
- https://community.teamviewer.com/t5/Knowledge-Base/tkb-p/Knowledgebase?threadtype=label&labels=Security
- https://twitter.com/Blurbdust/status/1224212682594770946?s=20
- https://whynotsecurity.com/blog/teamviewer/
- https://community.teamviewer.com/t5/Change-Logs/Windows-v14-7-39531-Full-Change-Log/td-p/90813