Remote code execution in Microsoft Word



Published: 2019-08-14
Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-1201
CVE-2019-1205
CWE-ID CWE-121
CWE-119
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Microsoft Office for Mac
Client/Desktop applications / Office applications

Microsoft Office
Client/Desktop applications / Office applications

Microsoft Word
Client/Desktop applications / Office applications

Microsoft Office Web Apps
Client/Desktop applications / Office applications

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stack-based buffer overflow

EUVDB-ID: #VU20261

Risk: High

CVSSv3.1:

CVE-ID: CVE-2019-1201

CWE-ID: CWE-121 - Stack-based Buffer Overflow

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 when processing Microsoft Word files. A remote attacker can create a specially crafted Office document, trick the victim into opening it, trigger stack-based buffer overflow 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 for Mac: 2016

Microsoft Office: 365 ProPlus - 2019 for Mac

Microsoft Word: 2010 - 2016

Microsoft Office Web Apps: 2010 Service Pack 2


CPE2.3 External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1201
http://www.zerodayinitiative.com/advisories/ZDI-19-715/

Q & A

Can this vulnerability be exploited remotely?

How the attacker can exploit this vulnerability?

Is there known malware, which exploits this vulnerability?

2) Buffer overflow

EUVDB-ID: #VU20262

Risk: High

CVSSv3.1:

CVE-ID: CVE-2019-1205

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 when processing Microsoft Word files. A remote attacker can create a specially crafted Office document, 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 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-2019-1205

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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