CVE-2021-28190 ASUS BMC's firmware: buffer overflow - Generate new certificate function

Medium 4.9 Published 6 Apr 2021 Updated 16 Sep 2024

Remote attackers can cause a buffer overflow in the certificate generation function, leading to abnormal termination of the web service.

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-2021-28190?

CVE-2021-28190 is a medium-severity memory corruption vulnerability in ASUS BMC firmware for ASMB9-iKVM, published on 6 Apr 2021. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

The specific function in ASUS BMC’s firmware Web management page (Generate new certificate function) does not verify the string length entered by users, resulting in a Buffer overflow vulnerability. As obtaining the privileged permission, remote attackers use the leakage to abnormally terminate the Web service.

Weakness: CWE-120

Which versions are affected by CVE-2021-28190?

It affects 44 products.

Products include Asus Asmb9-Ikvm Firmware, Asus E700 G4 Firmware, Asus Esc4000 Dhd G4 Firmware, Asus Esc4000 G4 Firmware, Asus Esc4000 G4x Firmware, Asus Esc8000 G4\/10g Firmware and 38 more.

How do I fix CVE-2021-28190?

No fix has been published for CVE-2021-28190 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-2021-28190 being exploited?

There is no known exploitation of CVE-2021-28190 in the wild and no public exploit code.

Sources

Also known as GHSA-8m8f-h54p-vqgg.