CVE-2018-3999 Memory corruption in Atlantis Word Processor

High 8.8 Published Updated

A stack-based buffer overflow in Atlantis Word Processor allows attackers to execute arbitrary code by tricking users into opening a specially crafted document.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
A user has to click or open something
Fix
None listed

What is CVE-2018-3999?

CVE-2018-3999 is a high-severity memory corruption vulnerability in The Atlantis Word Processor Team Atlantis Word Processor, published on 1 Oct 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

An exploitable stack-based buffer overflow vulnerability exists in the JPEG parser of Atlantis Word Processor, version 3.2.5.0. A specially crafted image embedded within a document can cause a length to be miscalculated and underflow. This length is then treated as unsigned and then used in a copying operation. Due to the length underflow, the application will then write outside the bounds of a stack buffer, resulting in a buffer overflow. An attacker must convince a victim to open a document in order to trigger this vulnerability.

Weakness: CWE-787, CWE-681, CWE-191

Which versions are affected by CVE-2018-3999?

It affects 1 product.

Products include Atlantiswordprocessor Atlantis Word Processor.

How do I fix CVE-2018-3999?

No fix has been published for CVE-2018-3999 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-2018-3999 being exploited?

There is no known exploitation of CVE-2018-3999 in the wild and no public exploit code.

Sources

Also known as GHSA-x848-36vw-v4cv.

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