CVE-2020-15416 Memory corruption in R6700
Network-adjacent attackers can execute arbitrary code as root on NETGEAR R6700 routers via a stack-based buffer overflow in the httpd service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-15416?
CVE-2020-15416 is a high-severity memory corruption vulnerability in Netgear R6700 Firmware, published on 28 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9703.
Weakness: CWE-121
Which versions are affected by CVE-2020-15416?
It affects 1 product.
Products include Netgear R6700 Firmware.
How do I fix CVE-2020-15416?
No fix has been published for CVE-2020-15416 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-15416 being exploited?
There is no known exploitation of CVE-2020-15416 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Netgear R6700 Firmware
Sources
Also known as GHSA-95gr-j6v5-xvxf.