PT-2019-1133 · Microsoft · Windows Server 2016+10

Published 2019-01-08 · Updated 2020-08-24 · CVE-2019-0555

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions: Windows Server 2012 R2 Windows RT 8.1 Windows Server 2012 Windows Server 2019 Windows Server 2016 Windows 8.1 Windows 10 Windows 10 Servers

Description: The issue is related to an elevation of privilege vulnerability in the Microsoft XmlDocument class. This vulnerability could allow an attacker to escape from the AppContainer sandbox in the browser. It is associated with unsafe privilege management. The exploitation of this vulnerability may enable an attacker to elevate their privileges and exit the isolated Edge AppContainer environment.

Recommendations: For Windows Server 2012 R2, update to a version that includes the fix for this issue. For Windows RT 8.1, update to a version that includes the fix for this issue. For Windows Server 2012, update to a version that includes the fix for this issue. For Windows Server 2019, update to a version that includes the fix for this issue. For Windows Server 2016, update to a version that includes the fix for this issue. For Windows 8.1, update to a version that includes the fix for this issue. For Windows 10, update to a version that includes the fix for this issue. For Windows 10 Servers, update to a version that includes the fix for this issue. As a temporary workaround, consider restricting access to the Microsoft XmlDocument class until a patch is available.

Exploit

Fix

LPE

Missing Authorization

Improper Privilege Management

Weakness Enumeration

CWE-862

CWE-269

Related Identifiers

BDU:2019-00159

CVE-2019-0555

Affected Products

Edge

Xmldocument

Windows

Windows 10

Windows 10 Servers

Windows 8.1

Windows Rt 8.1

Windows Server 2012

Windows Server 2012 R2

Windows Server 2016

Windows Server 2019

References · 8

• 🔥 https://exploit-db.com/exploits/46185 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2019-0555 · Security Note
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2019-0555 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-0555 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0555 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-0555 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-00159 · Security Note
• http://securityfocus.com/bid/106395 · Note