A vulnerability classified as critical was found in Atlantis Word Processor 3.2.7.2. This vulnerability affects some unknown processing of the component PNG Handler. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. The CWE definition for the vulnerability is CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An exploitable out-of-bounds write vulnerability exists in the PNG implementation of Atlantis Word Processor, version 3.2.7.2. This can allow an attacker to corrupt memory, which can result in code execution under the context of the application. An attacker must convince a victim to open a specially crafted document in order to trigger this vulnerability.

The bug was discovered 11/20/2018. The weakness was presented 12/01/2018 (Website). The advisory is available at talosintelligence.com. This vulnerability was named CVE-2018-4039 since 01/02/2018. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

The vulnerability was handled as a non-public zero-day exploit for at least 11 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 371342 (Atlantis Word Processor Multiple Remote Code Execution Vulnerabilities).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See 127377 and 127379 for similar entries.

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Vendor

• Atlantis

Name

• Word Processor

Version

• 3.2.7.2

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CPE 2.2info

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