CVE-2021-28188 ASUS BMC's firmware: buffer overflow - Modify user’s information function

Medium 4.9 Published Updated

Remote attackers can cause a buffer overflow in the user modification 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-2021-28188?

CVE-2021-28188 is a medium-severity memory corruption vulnerability in ASUS BMC firmware for ASMB8-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 (Modify user’s information 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-2021-28188?

It affects 3 products.

Products include Asus Asmb8-Ikvm Firmware, Asus Z10pe-D16 Ws Firmware, Asus Z10pr-D16 Firmware.

How do I fix CVE-2021-28188?

No fix has been published for CVE-2021-28188 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-2021-28188 being exploited?

There is no known exploitation of CVE-2021-28188 in the wild and no public exploit code.

Sources

Also known as GHSA-v57h-2cmj-gqr2.

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