Microsoft Word 2007/2010/2013/2016 memory corruption

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CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability, which was classified as critical, has been found in Microsoft Word 2007/2010/2013/2016 (Word Processing Software). Affected by this issue is an unknown function. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is confidentiality, integrity, and availability.

The bug was discovered 01/09/2018. The weakness was released 01/09/2018 by Nicolas Joly with Microsoft as confirmed security update guide (Website). The advisory is available at portal.msrc.microsoft.com. This vulnerability is handled as CVE-2018-0794 since 12/01/2017. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 01/29/2021). The advisory points out:

A remote code execution vulnerability exists in Microsoft Office software when the software fails to properly handle objects in memory. 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.

The vulnerability scanner Nessus provides a plugin with the ID 105728 (Security Updates for Microsoft Office Products (January 2018)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins and running in the context local. The commercial vulnerability scanner Qualys is able to test this issue with plugin 110310 (Microsoft Office and Microsoft Office Services and Web Apps Security Update January 2018).

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

The vulnerability is also documented in the databases at SecurityFocus (BID 102373), SecurityTracker (ID 1040153) and Tenable (105728). Entries connected to this vulnerability are available at 111561, 111562, 111563 and 111564.

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VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Current Price Estimation: 🔍

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Nessus ID: 105728
Nessus Name: Security Updates for Microsoft Office Products (January 2018)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
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OpenVAS ID: 67712
OpenVAS Name: Microsoft Office Compatibility Pack Service Pack 3 Multiple RCE Vulnerabilities (KB4011607)
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Countermeasuresinfoedit

Recommended: Patch
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Patch: portal.msrc.microsoft.com

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12/01/2017 🔍
01/09/2018 +39 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/09/2018 +0 days 🔍
01/10/2018 +1 days 🔍
01/10/2018 +0 days 🔍
01/29/2021 +1115 days 🔍

Sourcesinfoedit

Vendor: https://www.microsoft.com/

Advisory: portal.msrc.microsoft.com
Researcher: Nicolas Joly
Organization: Microsoft
Status: Confirmed
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CVE: CVE-2018-0794 (🔍)
OVAL: 🔍

SecurityFocus: 102373 - Microsoft Word CVE-2018-0794 Remote Code Execution Vulnerability
SecurityTracker: 1040153

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Entryinfoedit

Created: 01/10/2018 02:18 PM
Updated: 01/29/2021 01:17 PM
Changes: (2) source_sectracker vulnerability_cvss2_nvd_basescore
Complete: 🔍

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