Microsoft Office 2007/2010/2013/2016 Equation Editor memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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6.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Office 2007/2010/2013/2016. It has been rated as critical. Affected by this vulnerability is an unknown functionality of the component Equation Editor. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2018-0802. The attack may be initiated remotely. In addition, an exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability classified as critical has been found in Microsoft Office 2007/2010/2013/2016 (Office Suite Software). This affects an unknown function of the component Equation Editor. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Equation Editor in Microsoft Office 2007, Microsoft Office 2010, Microsoft Office 2013, and Microsoft Office 2016 allow a remote code execution vulnerability due to the way objects are handled in memory, aka "Microsoft Office Memory Corruption Vulnerability". This CVE is unique from CVE-2018-0797 and CVE-2018-0812.

The bug was discovered 01/09/2018. The weakness was presented 01/09/2018 by Core Security with Qihoo 360 Vulcan Team as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. This vulnerability is uniquely identified as CVE-2018-0802 since 12/01/2017. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. 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.

It is declared as attacked. 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 l. 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). The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 05/03/2022:

Apply updates per vendor instructions.

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 Zero-Day.cz (482), Tenable (105728) and SecurityFocus (BID 102347†). See VDB-111561, VDB-111562, VDB-111563 and VDB-111564 for similar entries. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.9

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

NVD Base Score: 7.8
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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Attacked

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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)
OpenVAS File: 🔍
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Zero-Day.cz: 🔍

Threat Intelligenceinfo

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Countermeasuresinfo

Recommended: Patch
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Timelineinfo

12/01/2017 🔍
01/09/2018 +39 days 🔍
01/09/2018 +0 days 🔍
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01/10/2018 +0 days 🔍
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09/09/2024 +2434 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Researcher: Core Security
Organization: Qihoo 360 Vulcan Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-0802 (🔍)
GCVE (CVE): GCVE-0-2018-0802
GCVE (VulDB): GCVE-100-111573

OVAL: 🔍

SecurityFocus: 102347 - Microsoft Office CVE-2018-0802 Memory Corruption Vulnerability
SecurityTracker: 1040153

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/10/2018 14:19
Updated: 09/09/2024 22:29
Changes: 01/10/2018 14:19 (84), 02/09/2020 10:19 (2), 01/29/2021 14:06 (2), 04/19/2024 11:54 (27), 07/05/2024 15:07 (2), 07/25/2024 17:46 (1), 09/09/2024 22:29 (1)
Complete: 🔍
Cache ID: 216::103

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