CVE-2021-43405 Command injection in n/a
Attackers can inject risky characters into the fax_extension field to potentially execute arbitrary commands on the FusionPBX server.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-43405?
CVE-2021-43405 is a high-severity command injection vulnerability in Fusionpbx Fusionpbx, published on 5 Nov 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in FusionPBX before 4.5.30. The fax_extension may have risky characters (it is not constrained to be numeric).
Which versions are affected by CVE-2021-43405?
It affects 1 product.
Products include Fusionpbx Fusionpbx.
How do I fix CVE-2021-43405?
No fix has been published for CVE-2021-43405 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-2021-43405 being exploited?
There is no known exploitation of CVE-2021-43405 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Fusionpbx Fusionpbx
Sources
Also known as GHSA-42c2-hjwj-v6gj.