CVE-2018-21147 Memory corruption in n/a
An authenticated user can trigger a stack-based buffer overflow in NETGEAR routers, potentially leading to arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-21147?
CVE-2018-21147 is a medium-severity memory corruption vulnerability in Netgear D7800 Firmware, published on 21 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 authenticated user. This affects D7800 before 1.0.1.34, R7500v2 before 1.0.3.26, R7800 before 1.0.2.42, R8900 before 1.0.3.10, R9000 before 1.0.3.10, WNDR4300v2 before 1.0.0.54, and WNDR4500v3 before 1.0.0.54.
Weakness: CWE-787
Which versions are affected by CVE-2018-21147?
It affects 7 products.
Products include Netgear D7800 Firmware, Netgear R7500 Firmware, Netgear R7800 Firmware, Netgear R8900 Firmware, Netgear R9000 Firmware, Netgear Wndr4300 Firmware and 1 more.
How do I fix CVE-2018-21147?
No fix has been published for CVE-2018-21147 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-2018-21147 being exploited?
There is no known exploitation of CVE-2018-21147 in the wild and no public exploit code.
Other vulnerabilities in Netgear D7800 Firmware
Sources
Also known as GHSA-hxw5-5p78-xcwh.