CVE-2018-21134 Memory corruption in n/a
Unauthenticated attackers can execute arbitrary code via a stack-based buffer overflow in various NETGEAR router and extender firmware versions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-21134?
CVE-2018-21134 is a medium-severity memory corruption vulnerability in Netgear D6220 Firmware, published on 23 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Certain NETGEAR devices are affected by a stack-based buffer overflow by an unauthenticated attacker. This affects R6700 before 1.0.1.48, R7900 before 1.0.2.16, R6900 before 1.0.1.48, R7000P before 1.3.1.44, R6900P before 1.3.1.44, R6250 before 1.0.4.30, R6300v2 before 1.0.4.32, R6400 before 1.0.1.44, R6400v2 before 1.0.2.60, R7000 before 1.0.9.34, R7100LG before 1.0.0.48, R7300 before 1.0.0.68, R8000 before 1.0.4.18, R8000P before 1.4.1.24, R7900P before 1.4.1.24, R8500 before 1.0.2.122, R8300 before 1.0.2.122, WN2500RPv2 before 1.0.1.54, EX3700 before 1.0.0.72, EX3800 before 1.0.0.72, EX6000 before 1.0.0.32, EX6100 before 1.0.2.24, EX6120 before 1.0.0.42, EX6130 before 1.0.0.24, EX6150v1 before 1.0.0.42, EX6200 before 1.0.3.88, EX7000 before 1.0.0.66, D7000v2 before 1.0.0.51, D6220 before 1.0.0.46, D6400 before 1.0.0.82, and D8500 before 1.0.3.42.
Weakness: CWE-787
Which versions are affected by CVE-2018-21134?
It affects 30 products.
Products include Netgear D6220 Firmware, Netgear D6400 Firmware, Netgear D7000 Firmware, Netgear D8500 Firmware, Netgear Ex3700 Firmware, Netgear Ex3800 Firmware and 24 more.
How do I fix CVE-2018-21134?
No fix has been published for CVE-2018-21134 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-2018-21134 being exploited?
There is no known exploitation of CVE-2018-21134 in the wild and no public exploit code.
Other vulnerabilities in Netgear D6220 Firmware
Sources
Also known as GHSA-f6mj-xf48-98pp.