CVE-2018-20305 Memory corruption in n/a

Critical 9.8 Published Updated

Attackers can achieve remote code execution on D-Link DIR-816 routers by triggering a stack-based buffer overflow via the password parameter.

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-2018-20305?

CVE-2018-20305 is a critical memory corruption vulnerability in n/a, published on 20 Dec 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

D-Link DIR-816 A2 1.10 B05 devices allow arbitrary remote code execution without authentication via the newpass parameter. In the /goform/form2userconfig.cgi handler function, a long password may lead to a stack-based buffer overflow and overwrite a return address.

Weakness: CWE-787

Which versions are affected by CVE-2018-20305?

It affects 1 product.

Products include D-Link Dir-816 A2 Firmware.

How do I fix CVE-2018-20305?

No fix has been published for CVE-2018-20305 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-2018-20305 being exploited?

There is no known exploitation of CVE-2018-20305 in the wild and no public exploit code.

Sources

Also known as GHSA-34qv-w885-5qpc.

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