CVE-2018-3982 Information

Description

An exploitable arbitrary write vulnerability exists in the Word document parser of the Atlantis Word Processor 3.0.2.3 and 3.0.2.5. A specially crafted document can prevent Atlas from adding elements to an array that is indexed by a loop. When reading from this array the application will use an out-of-bounds index which can result in arbitrary data being read as a pointer. Later when the application attempts to write to said pointer an arbitrary write will occur. This can allow an attacker to further corrupt memory which leads to code execution under the context of the application. An attacker must convince a victim to open a document in order to trigger this vulnerability.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Reference

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0650

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

7.8