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Vulnerability of WebSphere AS: information disclosure via Serialized Objects

Synthesis of the vulnerability 

An attacker can bypass access restrictions to data via Serialized Objects of WebSphere AS, in order to obtain sensitive information.
Vulnerable products: Rational ClearCase, WebSphere AS Traditional.
Severity of this weakness: 2/4.
Creation date: 05/06/2020.
Références of this bulletin: 6220296, 6237048, CERTFR-2020-AVI-343, CVE-2020-4449, VIGILANCE-VUL-32448, ZDI-20-690.

Description of the vulnerability 

An attacker can bypass access restrictions to data via Serialized Objects of WebSphere AS, in order to obtain sensitive information.
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This cybersecurity vulnerability impacts software or systems such as Rational ClearCase, WebSphere AS Traditional.

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

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

An attacker with a expert ability can exploit this weakness alert.

Solutions for this threat 

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

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