CVE-2018-4000 Use after free in Atlantis Word Processor

High 8.8 Published Updated

A double-free vulnerability 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-2018-4000?

CVE-2018-4000 is a high-severity use after free 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 double-free vulnerability exists in the Office Open XML parser of Atlantis Word Processor, version 3.2.5.0. A specially crafted document can cause a TTableRow instance to be referenced twice, resulting in a double-free vulnerability when both the references go out of scope. An attacker must convince a victim to open a document in order to trigger this vulnerability.

Weakness: CWE-415

Which versions are affected by CVE-2018-4000?

It affects 1 product.

Products include Atlantiswordprocessor Atlantis Word Processor.

How do I fix CVE-2018-4000?

No fix has been published for CVE-2018-4000 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-4000 being exploited?

There is no known exploitation of CVE-2018-4000 in the wild and no public exploit code.

Sources

Also known as GHSA-g47x-cpw8-vm37.

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