Microsoft Office/SharePoint 2010 SP2 Word 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 classified as critical was found in Microsoft Office and SharePoint 2010 SP2. This affects an unknown function of the component Word. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2018-8539. The attack may be performed from remote. There is no available exploit. Applying a patch is advised to resolve this issue.

Detailsinfo

A vulnerability was found in Microsoft Office and SharePoint 2010 SP2 (Office Suite Software). It has been rated as critical. Affected by this issue is an unknown function of the component Word. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability.

The bug was discovered 11/13/2018. The weakness was presented 11/13/2018 as confirmed security update guide (Website). The advisory is shared for download at portal.msrc.microsoft.com. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2018-8539 since 03/14/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit 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.

The vulnerability scanner Nessus provides a plugin with the ID 118927 (Security Updates for Microsoft Office Web Apps (November 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 110325 (Microsoft Office and Microsoft Office Services and Web Apps Security Update November 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 Tenable (118927) and SecurityFocus (BID 105835†). See VDB-126715, VDB-126716, VDB-126717 and VDB-126726 for similar entries. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.2info

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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CVSSv2info

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Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

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EPSS Percentile: 🔍

Price Prediction: 🔍
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Nessus ID: 118927
Nessus Name: Security Updates for Microsoft Office Web Apps (November 2018)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Patch
Status: 🔍

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Timelineinfo

03/14/2018 🔍
11/13/2018 +244 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/13/2018 +0 days 🔍
11/14/2018 +1 days 🔍
06/06/2023 +1665 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8539 (🔍)
GCVE (CVE): GCVE-0-2018-8539
GCVE (VulDB): GCVE-100-126728
SecurityFocus: 105835 - Microsoft Word CVE-2018-8539 Remote Code Execution Vulnerability
SecurityTracker: 1042112

See also: 🔍

Entryinfo

Created: 11/14/2018 09:22
Updated: 06/06/2023 08:08
Changes: 11/14/2018 09:22 (75), 04/12/2020 09:27 (5), 06/06/2023 08:08 (5)
Complete: 🔍
Cache ID: 216::103

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