CVE-2019-5153 Memory corruption in Moxa

Critical 9.9 Published Updated

A low-privilege authenticated attacker can trigger a buffer overflow in the Moxa AWK-3131A firmware to achieve remote code execution.

Exploited in the wild
Not known
Login needed
Any signed-in user
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2019-5153?

CVE-2019-5153 is a critical memory corruption vulnerability in Moxa, published on 25 Feb 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

An exploitable remote code execution vulnerability exists in the iw_webs configuration parsing functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted user name entry can cause an overflow of an error message buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.

Weakness: CWE-787, CWE-121

Which versions are affected by CVE-2019-5153?

It affects 1 product.

Products include Moxa Awk-3131a Firmware.

How do I fix CVE-2019-5153?

No fix has been published for CVE-2019-5153 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-2019-5153 being exploited?

There is no known exploitation of CVE-2019-5153 in the wild and no public exploit code.

Sources

Also known as GHSA-rx2c-347v-f3f4.

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