CVE-2018-0640 Memory corruption in HC100RC

High 7.2 Published 9 Jan 2019 Updated 5 Aug 2024

An administrator can execute arbitrary code on NEC Aterm HC100RC routers via a buffer overflow in the netWizard.cgi script parameters.

Exploited in the wild: Not known
Login needed: An administrator
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2018-0640?

CVE-2018-0640 is a high-severity memory corruption vulnerability in NEC Corporation HC100RC, published on 9 Jan 2019. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

Buffer overflow in Aterm HC100RC Ver1.0.1 and earlier allows attacker with administrator rights to execute arbitrary code via netWizard.cgi date parameter, time parameter, and offset parameter.

Weakness: CWE-119

Which versions are affected by CVE-2018-0640?

It affects 1 product.

Products include Nec Aterm Hc100rc Firmware.

How do I fix CVE-2018-0640?

No fix has been published for CVE-2018-0640 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-2018-0640 being exploited?

There is no known exploitation of CVE-2018-0640 in the wild and no public exploit code.

Sources

Also known as GHSA-4pjf-jwfp-vg6f.