Remote code execution in Microsoft Excel



Published: 2019-10-09
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-1327
CVE-2019-1331
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Microsoft Excel
Client/Desktop applications / Office applications

Microsoft Office for Mac
Client/Desktop applications / Office applications

Microsoft Office
Client/Desktop applications / Office applications

Excel Services on Microsoft SharePoint Server
Client/Desktop applications / Office applications

Office Online Server
Server applications / Other server solutions

Microsoft SharePoint Server
Server applications / Application servers

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU21649

Risk: High

CVSSv3.1:

CVE-ID: CVE-2019-1327

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Excel software.

Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Excel.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Excel: 2010 - 2016

Microsoft Office for Mac: 2016

Microsoft Office: 365 ProPlus - 2019 for Mac


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1327

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Input validation error

EUVDB-ID: #VU21650

Risk: High

CVSSv3.1:

CVE-ID: CVE-2019-1331

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Excel software.

Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Excel.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Excel: 2010 - 2016

Microsoft Office: 365 ProPlus - 2019 for Mac

Microsoft Office for Mac: 2016

Office Online Server : 2016

Microsoft SharePoint Server: 2013

Excel Services on Microsoft SharePoint Server: 2010


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1331

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?



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