CVE-2021-20708 Command injection in NEC Aterm devices
Authenticated attackers can execute arbitrary OS commands on NEC Aterm routers via crafted requests, requiring firmware updates to mitigate.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-20708?
CVE-2021-20708 is a high-severity command injection vulnerability in NEC Aterm devices, published on 26 Apr 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
NEC Aterm devices (Aterm WF1200CR firmware Ver1.3.2 and earlier, Aterm WG1200CR firmware Ver1.3.3 and earlier, and Aterm WG2600HS firmware Ver1.5.1 and earlier) allow authenticated attackers to execute arbitrary OS commands by sending a specially crafted request to a specific URL.
Weakness: CWE-78
Which versions are affected by CVE-2021-20708?
It affects 3 products.
Products include Nec Aterm Wf1200cr Firmware, Nec Aterm Wg1200cr Firmware, Nec Aterm Wg2600hs Firmware.
How do I fix CVE-2021-20708?
No fix has been published for CVE-2021-20708 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-2021-20708 being exploited?
There is no known exploitation of CVE-2021-20708 in the wild and no public exploit code.
Other vulnerabilities in NEC Aterm devices
- CVE-2018-16195 Command injection in Aterm WF1200CR and Aterm WG1200CR
- CVE-2021-20709 Command injection in NEC Aterm devices
- CVE-2018-16194 Command injection in Aterm WF1200CR and Aterm WG1200CR
- CVE-2018-16192 Information disclosure in Aterm WF1200CR and Aterm WG1200CR
- CVE-2018-16193 Cross-site scripting in Aterm WF1200CR and Aterm WG1200CR
Sources
Also known as GHSA-w32w-5vr5-g3ph.