CVE-2017-11420 Memory corruption in n/a

Critical 9.8 Published Updated

Remote attackers can execute arbitrary code on ASUS routers via a stack-based buffer overflow in the networkmap component.

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-2017-11420?

CVE-2017-11420 is a critical memory corruption vulnerability in n/a, published on 18 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Stack-based buffer overflow in ASUS_Discovery.c in networkmap in Asuswrt-Merlin firmware for ASUS devices and ASUS firmware for ASUS RT-AC5300, RT_AC1900P, RT-AC68U, RT-AC68P, RT-AC88U, RT-AC66U, RT-AC66U_B1, RT-AC58U, RT-AC56U, RT-AC55U, RT-AC52U, RT-AC51U, RT-N18U, RT-N66U, RT-N56U, RT-AC3200, RT-AC3100, RT_AC1200GU, RT_AC1200G, RT-AC1200, RT-AC53, RT-N12HP, RT-N12HP_B1, RT-N12D1, RT-N12+, RT_N12+_PRO, RT-N16, and RT-N300 devices allows remote attackers to execute arbitrary code via long device information that is mishandled during a strcat to a device list.

Weakness: CWE-119

Which versions are affected by CVE-2017-11420?

It affects 28 products.

Products include Asuswrt-Merlin Project Rt-Ac1200 Firmware, Asuswrt-Merlin Project Rt-Ac3100 Firmware, Asuswrt-Merlin Project Rt-Ac3200 Firmware, Asuswrt-Merlin Project Rt-Ac51u Firmware, Asuswrt-Merlin Project Rt-Ac52u Firmware, Asuswrt-Merlin Project Rt-Ac5300 Firmware and 22 more.

How do I fix CVE-2017-11420?

No fix has been published for CVE-2017-11420 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-2017-11420 being exploited?

There is no known exploitation of CVE-2017-11420 in the wild and no public exploit code.

Sources

Also known as GHSA-2pp8-vrh8-g482.

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