Microsoft PowerPoint CVE-2018-8176 – Remote Code Execution

Authors:anonymous               Risk:High

CVE:CVE-2018-8176              0day:Remote Command Execution 

0day -id:0DAY-176193            Date:2018-05-17

Description

A remote code execution vulnerability exists in Microsoft PowerPoint software when the software fails to properly validate XML content. An attacker who successfully exploited the vulnerability could run arbitrary code in the context of the current user. If the current user is logged on with administrative user rights, an attacker could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights. Users whose accounts are configured to have fewer user rights on the system could be less impacted than users who operate with administrative user rights.

Exploitation of the vulnerability requires that a user open a specially crafted file with an affected version of Microsoft Office PowerPoint software. In an email attack scenario, an attacker could exploit the vulnerability by sending the specially crafted file to the user and convincing the user to open the file. In a web-based attack scenario, an attacker could host a website (or leverage a compromised website that accepts or hosts user-provided content) that contains a specially crafted file designed to exploit the vulnerability. An attacker would have no way to force users to visit the website. Instead, an attacker would have to convince users to click a link, typically by way of an enticement in an email or instant message, and then convince them to open the specially crafted file. After the file is open, the user would need to move their mouse over a specific location on the page within the PowerPoint file to trigger the vulnerability.

Note that the Preview Pane is not an attack vector for this vulnerability. The security update addresses the vulnerability by correcting how Microsoft PowerPoint handles objects in memory.

Exploitability Assessment

The following table provides an exploitability assessment for this vulnerability at the time of original publication.

Publicly Disclosed Exploited Latest Software Release Older Software Release Denial of Service
Yes No 3 – Exploitation Unlikely 4 – Not affected Not Applicable

Affected Products

The following software versions or editions are affected. Versions or editions that are not listed are either past their support life cycle or are not affected. To determine the support life cycle for your software version or edition, see the Microsoft Support Lifecycle.

Product
Platform
Article
Download
Impact
Severity
Supersedence
Microsoft Office 2016 for Mac Release Notes Security Update Remote Code Execution Important

Mitigations

Microsoft has not identified any mitigating factors for this vulnerability.

 

Workarounds

Microsoft has not identified any workarounds for this vulnerability.

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