Multiple vulnerabilities in Microsoft Excel



Published: 2018-05-08
Risk High
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2018-8162
CVE-2018-8163
CVE-2018-8147
CVE-2018-8148
CWE-ID CWE-119
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Microsoft Excel
Client/Desktop applications / Office applications

Microsoft Office
Client/Desktop applications / Office applications

Microsoft Office for Mac
Client/Desktop applications / Office applications

Microsoft Office Compatibility Pack
Client/Desktop applications / Office applications

Vendor Microsoft

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Buffer overflow

EUVDB-ID: #VU12484

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-2018-8162

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 Excel documents. A remote unauthenticated attacker can create a specially crafted Excel document, trick the victim into opening it 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 Excel: 2010 - 2016

Microsoft Office: 2010 - 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8162


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) Information disclosure

EUVDB-ID: #VU12486

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-8163

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 out-of-bounds read in Microsoft Excel. A remote attacker can create a specially crafted Excel file, trick the victim into opening it and gain access to potentially sensitive information.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Excel: 2010 - 2016

Microsoft Office: 2010 - 2016

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8163


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) Buffer overflow

EUVDB-ID: #VU12488

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-2018-8147

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 Excel documents. A remote unauthenticated attacker can create a specially crafted Excel  document, trick the victim into opening it 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 - 2016

Microsoft Office for Mac: 2016

Microsoft Excel: 2010 - 2016

Microsoft Office Compatibility Pack: Service Pack 3

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8147


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.

4) Buffer overflow

EUVDB-ID: #VU12490

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-2018-8148

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 Excel documents. A remote unauthenticated attacker can create a specially crafted Excel document, trick the victim into opening it 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 - 2016

Microsoft Excel: 2010 - 2016

Microsoft Office Compatibility Pack: Service Pack 3

External links

http://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8148


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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