Microsoft Office/SharePoint Word memory corruption

Summaryinfo

A vulnerability was found in Microsoft Office and SharePoint. It has been classified as critical. This vulnerability affects unknown code of the component Word. This manipulation causes memory corruption. This vulnerability is tracked as CVE-2020-1446. The attack is possible to be carried out remotely. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical was found in Microsoft Office and SharePoint (Office Suite Software) (unknown version). Affected by this vulnerability is an unknown code block of the component Word. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory, aka 'Microsoft Word Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1447, CVE-2020-1448.

The weakness was disclosed 07/14/2020 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The public release has been coordinated in cooperation with Microsoft. This vulnerability is known as CVE-2020-1446. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. The advisory points out:

A remote code execution vulnerability exists in Microsoft Word software when it fails to properly handle objects in memory. An attacker who successfully exploited the vulnerability could use a specially crafted file to perform actions in the security context of the current user. For example, the file could then take actions on behalf of the logged-on user with the same permissions as the current user.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entry VDB-157896 is pretty similar. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Office Suite Software

Vendor

• Microsoft

Name

• Office
• SharePoint

License

• commercial

Website

• Vendor: https://www.microsoft.com/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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