Information disclosure in Microsoft XML Core Services

1) Information disclosure

EUVDB-ID: #VU5950

Risk: High

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:H/RL:O/RC:C]

CVE-ID: CVE-2017-0022

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information on the target system.

The vulnerability exists due to improper handling of objects in memory by Microsoft XML Core Services (MSXML). A remote unauthenticated attacker can create a specially crafted Web site, trick the victim into visiting it and test for the presence of files on disk.

Successful exploitation of this vulnerability results in information disclosure.

Note: the vulnerability was being actively exploited.

Mitigation

Install update from vendor's website:

Windows Vista Service Pack 2:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916
Windows Vista x64 Edition Service Pack 2:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916

Windows Server 2008 for 32-bit Systems Service Pack 2:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916
Windows Server 2008 for x64-based Systems Service Pack 2:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916
Windows Server 2008 for Itanium-based Systems Service Pack 2:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916

Windows 7 for 32-bit Systems Service Pack 1 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012212
Windows 7 for 32-bit Systems Service Pack 1 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012215
Windows 7 for x64-based Systems Service Pack 1 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012212
Windows 7 for x64-based Systems Service Pack 1 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012215

Windows Server 2008 R2 for x64-based Systems Service Pack 1 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012212
Windows Server 2008 R2 for x64-based Systems Service Pack 1 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012215
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012212
Windows Server 2008 R2 for Itanium-based Systems Service Pack 1 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012215

Windows 8.1 for 32-bit Systems Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012213
Windows 8.1 for 32-bit Systems Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012216
Windows 8.1 for x64-based Systems Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012213
Windows 8.1 for x64-based Systems Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012216

Windows Server 2012 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012214
Windows Server 2012 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012217
Windows Server 2012 R2 Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012213
Windows Server 2012 R2 Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012216

Windows 10 for 32-bit Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012606
Windows 10 for x64-based Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012606
Windows 10 Version 1511 for 32-bit Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013198
Windows 10 Version 1511 for x64-based Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013198
Windows 10 Version 1607 for 32-bit Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013429
Windows 10 Version 1607 for x64-based Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013429

Windows Server 2016 for x64-based Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013429

Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation):
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation):
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB3216916
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012212
Windows Server 2008 R2 for x64-based Systems Service Pack 1
(Server Core installation) Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012215
Windows Server 2012 (Server Core installation) Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012214
Windows Server 2012 (Server Core installation) Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012217
Windows Server 2012 R2 (Server Core installation) Security Only:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012213
Windows Server 2012 R2 (Server Core installation) Monthly Rollup:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4012216
Windows Server 2016 for x64-based Systems:
http://catalog.update.microsoft.com/v7/site/Search.aspx?q=KB4013429

Vulnerable software versions

Microsoft XML Core Services: 3.0

CPE2.3

• cpe:2.3:a:microsoft:microsoft_xml_core_services:3.0:*:*:*:*:*:*:*

External links

http://technet.microsoft.com/en-us/library/security/MS17-022

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?

Yes. This vulnerability is being exploited in the wild.