Microsoft Excel up to 2016 C2R information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Excel 2010 SP2/2013 RT SP1/2013 SP1/2016/2016 C2R. Impacted is an unknown function. This manipulation causes information disclosure. This vulnerability is registered as CVE-2018-8382. Remote exploitation of the attack is possible. No exploit is available. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Microsoft Excel 2010 SP2/2013 RT SP1/2013 SP1/2016/2016 C2R (Spreadsheet Software). It has been declared as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. The summary by CVE is:

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory, aka "Microsoft Excel Information Disclosure Vulnerability." This affects Microsoft Excel Viewer, Microsoft Office, Microsoft Excel.

The bug was discovered 08/14/2018. The weakness was published 08/14/2018 with Qihoo 360 as confirmed security update guide (Website). It is possible to read the advisory at portal.msrc.microsoft.com. The public release has been coordinated with Microsoft. This vulnerability is known as CVE-2018-8382 since 03/14/2018. 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. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK. The advisory points out:

An information disclosure vulnerability exists when Microsoft Excel improperly discloses the contents of its memory. An attacker who exploited the vulnerability could use the information to compromise the user’s computer or data.

The vulnerability scanner Nessus provides a plugin with the ID 111698 (Security Updates for Microsoft Office Viewer Products / Office Compatibility Products (August 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 110322 (Microsoft Office and Microsoft Office Services and Web Apps Security Update August 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 (111698) and SecurityFocus (BID 105000†). Similar entries are available at VDB-122870, VDB-122871, VDB-122872 and VDB-122873. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.9
VulDB Meta Temp Score: 4.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
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VulDB Reliability: 🔍

NVD Base Score: 5.5
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CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 111698
Nessus Name: Security Updates for Microsoft Office Viewer Products / Office Compatibility Products (August 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 🔍
08/14/2018 +152 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/14/2018 +0 days 🔍
08/15/2018 +0 days 🔍
05/02/2023 +1721 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: portal.msrc.microsoft.com
Organization: Qihoo 360
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2018-8382 (🔍)
GCVE (CVE): GCVE-0-2018-8382
GCVE (VulDB): GCVE-100-122875

OVAL: 🔍

SecurityFocus: 105000 - Microsoft Excel CVE-2018-8382 Information Disclosure Vulnerability
SecurityTracker: 1041463

See also: 🔍

Entryinfo

Created: 08/14/2018 21:50
Updated: 05/02/2023 08:11
Changes: 08/14/2018 21:50 (76), 03/15/2020 15:39 (6), 05/02/2023 08:11 (4)
Complete: 🔍
Cache ID: 216::103

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