Microsoft Windows up to Server 2019 XmlLite Runtime XmlLite.dll xml external entity reference

Summaryinfo

A vulnerability was found in Microsoft Windows. It has been classified as problematic. The impacted element is an unknown function in the library XmlLite.dll of the component XmlLite Runtime. The manipulation leads to xml external entity reference. This vulnerability is traded as CVE-2019-1187. It is possible to initiate the attack remotely. There is no exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Microsoft Windows (Operating System). It has been rated as problematic. This issue affects an unknown code block in the library XmlLite.dll of the component XmlLite Runtime. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is availability. The summary by CVE is:

A denial of service vulnerability exists when the XmlLite runtime (XmlLite.dll) improperly parses XML input. An attacker who successfully exploited this vulnerability could cause a denial of service against an XML application. A remote unauthenticated attacker could exploit this vulnerability by issuing specially crafted requests to an XML application. The update addresses the vulnerability by correcting how the XmlLite runtime parses XML input.

The weakness was shared 08/13/2019 as confirmed security update guide (Website). The advisory is shared at portal.msrc.microsoft.com. The vendor cooperated in the coordination of the public release. The identification of this vulnerability is CVE-2019-1187 since 11/26/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 02/21/2026). The advisory points out:

A denial of service vulnerability exists when the XmlLite runtime (XmlLite.dll) improperly parses XML input. An attacker who successfully exploited this vulnerability could cause a denial of service against an XML application.

Applying a patch is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The entries VDB-139950, VDB-139948, VDB-139947 and VDB-139946 are related to this item. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Microsoft

Name

• Windows

Version

• 7 SP1
• 8.1
• 10
• 10 1607
• 10 1703
• 10 1709
• 10 1803
• 10 1809
• 10 1903
• RT 8.1
• Server 1803
• Server 1903
• Server 2008 R2 SP1
• Server 2008 SP2
• Server 2012
• Server 2012 R2
• Server 2016
• Server 2019

License

• commercial

Website

• Vendor: https://www.microsoft.com/
• Product: https://www.microsoft.com/en-us/windows

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