CVE-2021-38703 Command injection in n/a
Authenticated attackers can inject commands via the syslog form in Arcadyan-derived router firmware to achieve remote code execution.
- 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-2021-38703?
CVE-2021-38703 is a high-severity command injection vulnerability in n/a, published on 1 Sep 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Wireless devices running certain Arcadyan-derived firmware (such as KPN Experia WiFi 1.00.15) do not properly sanitise user input to the syslog configuration form. An authenticated remote attacker could leverage this to alter the device configuration and achieve remote code execution. This can be exploited in conjunction with CVE-2021-20090.
Which versions are affected by CVE-2021-38703?
It affects 1 product.
Products include Kpn Experia Wifi Firmware.
How do I fix CVE-2021-38703?
No fix has been published for CVE-2021-38703 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-2021-38703 being exploited?
There is no known exploitation of CVE-2021-38703 in the wild and no public exploit code.
Sources
Also known as GHSA-c387-pvvx-p3vq.