#VU21650 Input validation error in Microsoft products - CVE-2019-1331
Vulnerability identifier: #VU21650
Vulnerability risk: High
CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Microsoft Excel
Client/Desktop applications /
Office applications
Microsoft Office
Client/Desktop applications /
Office applications
Microsoft Office for Mac
Client/Desktop applications /
Office applications
Excel Services on Microsoft SharePoint Server
Client/Desktop applications /
Office applications
Office Online Server
Server applications /
Other server solutions
Microsoft SharePoint Server
Server applications /
Application servers
Vendor: Microsoft
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Excel software.
Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Excel.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Microsoft Excel: 2010, 2013 RT Service Pack 1, 2013, 2016
Microsoft Office: 365 ProPlus, 2010 Service Pack 2, 2013 RT - 2013, 2016, 2019 for Mac - 2019
Microsoft Office for Mac: 2016
Office Online Server : 2016
Microsoft SharePoint Server: 2013
Excel Services on Microsoft SharePoint Server: 2010
External links
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1331
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
