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Vulnerability of WebSphere AS: external XML entity injection

Synthesis of the vulnerability 

An attacker can transmit malicious XML data to WebSphere AS, in order to read a file, scan sites, or trigger a denial of service.
Impacted products: Rational ClearCase, Security Directory Server, WebSphere AS Traditional.
Severity of this bulletin: 2/4.
Creation date: 18/09/2020.
Références of this threat: 6334311, 6343331, 6357619, CERTFR-2020-AVI-583, CVE-2020-4643, VIGILANCE-VUL-33363.

Description of the vulnerability 

An attacker can transmit malicious XML data to WebSphere AS, in order to read a file, scan sites, or trigger a denial of service.
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This weakness bulletin impacts software or systems such as Rational ClearCase, Security Directory Server, WebSphere AS Traditional.

Our Vigil@nce team determined that the severity of this computer weakness is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this vulnerability announce.

Solutions for this threat 

WebSphere AS: patch for XXE.
A patch is indicated in information sources.

IBM Rational ClearCase: patch for WebSphere AS.
A patch is indicated in information sources.

IBM Security Directory Server: solution for WebSphere AS.
The solution is indicated in information sources.
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