Multiple vulnerabilities in Microsoft Office



Published: 2020-04-14
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-0991
CVE-2020-0760
CWE-ID CWE-119
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Microsoft Office
Client/Desktop applications / Office applications

Microsoft Excel
Client/Desktop applications / Office applications

Microsoft PowerPoint
Client/Desktop applications / Office applications

Microsoft Visio
Client/Desktop applications / Office applications

Microsoft Word
Client/Desktop applications / Office applications

Microsoft Access
Client/Desktop applications / Office applications

Microsoft Project
Client/Desktop applications / Office applications

Microsoft Outlook
Client/Desktop applications / Office applications

Microsoft Publisher
Client/Desktop applications / Office applications

Microsoft Project Server
Web applications / Other software

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU26851

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0991

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error in Microsoft Office software. A remote attacker can send a specially crafted file, trick the victim into opening it, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus - 2019


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0991

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Input validation error

EUVDB-ID: #VU26852

Risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-0760

CWE-ID: CWE-20 - Improper Input Validation

Exploit availability: No

Description

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

The vulnerability exists due to the Microsoft Office improperly loads arbitrary type libraries. A remote attacker can trick a victim to open a specially crafted Office document and execute arbitrary code on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus - 2019

Microsoft Excel: 2010 - 2016

Microsoft PowerPoint: 2010 Service Pack 2 - 2016

Microsoft Visio: 2010 - 2016

Microsoft Word: 2010 - 2016

Microsoft Access: 2010 Service Pack 2 - 2016

Microsoft Project: 2016

Microsoft Outlook: 2010 Service Pack 2 - 2016

Microsoft Project Server: 2010 Service Pack 2

Microsoft Publisher: 2010


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0760

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open a file.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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