CVE-2020-3924 TONNET DVR – Firmware Injection
Attackers can inject commands into patch files to gain unauthorized access to TONNET DVR systems.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2020-3924?
CVE-2020-3924 is a medium-severity command injection vulnerability in TONNET DVR, published on 27 Feb 2020. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
DVR firmware in TAT-76 and TAT-77 series of products, provided by TONNET do not properly verify patch files. Attackers can inject a specific command into a patch file and gain access to the system.
Weakness: CWE-77
Which versions are affected by CVE-2020-3924?
It affects 8 products.
Products include Tonnet Tat-70432n Firmware, Tonnet Tat-71416g1 Firmware, Tonnet Tat-71832g1 Firmware, Tonnet Tat-76104g3 Firmware, Tonnet Tat-76108g3 Firmware, Tonnet Tat-76116g3 Firmware and 2 more.
How do I fix CVE-2020-3924?
No fix has been published for CVE-2020-3924 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-2020-3924 being exploited?
There is no known exploitation of CVE-2020-3924 in the wild and no public exploit code.
Other vulnerabilities in TONNET DVR
Sources
Also known as GHSA-xv64-jjpm-mgjv.