CVE-2020-13699 Command injection in n/a
Attackers can exploit improper URI quoting to force NTLM authentication requests, enabling hash capture or relay attacks against TeamViewer users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-13699?
CVE-2020-13699 is a high-severity command injection vulnerability in n/a, published on 29 Jul 2020. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
TeamViewer Desktop for Windows before 15.8.3 does not properly quote its custom URI handlers. A malicious website could launch TeamViewer with arbitrary parameters, as demonstrated by a teamviewer10: --play URL. An attacker could force a victim to send an NTLM authentication request and either relay the request or capture the hash for offline password cracking. This affects teamviewer10, teamviewer8, teamviewerapi, tvchat1, tvcontrol1, tvfiletransfer1, tvjoinv8, tvpresent1, tvsendfile1, tvsqcustomer1, tvsqsupport1, tvvideocall1, and tvvpn1. The issue is fixed in 8.0.258861, 9.0.258860, 10.0.258873, 11.0.258870, 12.0.258869, 13.2.36220, 14.2.56676, 14.7.48350, and 15.8.3.
Weakness: CWE-88
Which versions are affected by CVE-2020-13699?
It affects 1 product.
Products include Teamviewer Teamviewer.
How do I fix CVE-2020-13699?
No fix has been published for CVE-2020-13699 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2020-13699 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2020-13699 exists.
Public exploit code: 1 Metasploit module and 1 proofs of concept on GitHub.
Other vulnerabilities in n/a
Sources
Also known as GHSA-f43w-mfrf-mv66.