Multiple vulnerabilities in Microsoft Office



Published: 2018-03-13
Risk High
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-0907
CVE-2018-0919
CVE-2018-0922
CWE-ID CWE-264
CWE-125
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 Excel
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

Microsoft Office Compatibility Pack
Client/Desktop applications / Office applications

Microsoft SharePoint Server
Server applications / Application servers

Microsoft Office Web Apps Server
Server applications / Application servers

Office Online Server
Server applications / Other server solutions

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Security restrictions bypass

EUVDB-ID: #VU11051

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0907

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists in in Microsoft Office software by not enforcing macro settings on an Excel document. A remote attacker can trick the victim to open a specially crafted Excel document and change default behavior of Microsoft Excel.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Office for Mac: 2016

Microsoft Excel: 2007 - 2016

Microsoft Office: 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0907


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) Out-of-bouds read

EUVDB-ID: #VU11053

Risk: Low

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0919

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The vulnerability exists due to a boundary error when processing Microsoft Office files. A remote attacker can create a specially crafted Microsoft Office file, trick the victim into opening it and view content of memory out of buffer bounds.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Office for Mac: 2016

Microsoft Office: 2010 Service Pack 2 - 2016

Microsoft Word: 2010 - 2016

Microsoft SharePoint Server: 2010 - 2016

Microsoft Office Web Apps: 2010 Service Pack 2

Office Online Server : 2016

Microsoft Office Web Apps Server: 2013 Service Pack 1

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0919


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.

3) Memory corruption

EUVDB-ID: #VU11057

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-2018-0922

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

Description

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

The vulnerability exists due to boundary error when processing Microsoft Office files. A remote unauthenticated attacker can create a specially crafted Microsoft Office 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 updates from vendor's website.

Vulnerable software versions

Microsoft Office: 2010 Service Pack 2

Microsoft Word: 2007 Service Pack 3 - Viewer

Microsoft Office Compatibility Pack: Service Pack 3

Microsoft SharePoint Server: 2010 - 2013

Microsoft Office Web Apps: 2010 Service Pack 2 - 2013 Service Pack 1

Office Online Server : 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0922


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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