CVE-2020-15636 Memory corruption in Multiple Routers
Remote attackers can execute arbitrary code as root on NETGEAR routers via a stack buffer overflow in the check_ra service without authentication.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-15636?
CVE-2020-15636 is a high-severity memory corruption vulnerability in Netgear R6700 Firmware, published on 19 Aug 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R6400, R6700, R7000, R7850, R7900, R8000, RS400, and XR300 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the check_ra service. A crafted raePolicyVersion in a RAE_Policy.json file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9852.
Weakness: CWE-121
Which versions are affected by CVE-2020-15636?
It affects 1 product.
Products include Netgear R6700 Firmware.
How do I fix CVE-2020-15636?
No fix has been published for CVE-2020-15636 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-2020-15636 being exploited?
There is no known exploitation of CVE-2020-15636 in the wild and no public exploit code.
Other vulnerabilities in Netgear R6700 Firmware
Sources
Also known as GHSA-4789-cr7h-xx57.