Multiple vulnerabilities in Microsoft Excel

Published: 2018-12-11 22:19:49
Severity High
Patch available YES
Number of vulnerabilities 4
CVE ID CVE-2018-8636
CVE-2018-8627
CVE-2018-8598
CVE-2018-8597
CVSSv3 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
3.8 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CWE ID CWE-119
CWE-125
Exploitation vector Network
Public exploit N/A
Vulnerable software Microsoft Excel
Microsoft Office
Microsoft Office for Mac
Microsoft Office Compatibility Pack
Excel Services on Microsoft SharePoint Server
Vulnerable software versions Microsoft Excel 2013 RT Service Pack 1
Microsoft Excel 2010
Microsoft Excel 2013
Microsoft Excel 2016
Microsoft Excel Viewer 2007 Service Pack 3
Microsoft Office 2019
Microsoft Office 365 ProPlus
Microsoft Office 2010

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Microsoft Office for Mac 2016
Microsoft Office Compatibility Pack Service Pack 3
Excel Services on Microsoft SharePoint Server 2010
Vendor URL Microsoft

Security Advisory

1) Buffer overflow

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 Excel files. A remote attacker can create a specially crafted Excel 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.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8636

2) Buffer overflow

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 Excel files. A remote attacker can create a specially crafted Excel 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.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8627

3) Out-of-bounds read

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition when processing Microsoft Excel files. A remote attacker can create a specially crafted Excel file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8598

4) Buffer overflow

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 Excel files. A remote attacker can create a specially crafted Excel 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.

Remediation

Install updates from vendor's website.

External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8597

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