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Vulnerability of Xen/Linux: read-write access via IO Ports

Synthesis of the vulnerability 

An attacker, inside a guest system, can bypass access restrictions via IO Ports of Xen/Linux, in order to read or alter data on the host system.
Vulnerable products: Linux.
Severity of this weakness: 2/4.
Creation date: 16/07/2020.
Références of this bulletin: CERTFR-2020-AVI-447, CVE-2020-15852, VIGILANCE-VUL-32862, XSA-329.

Description of the vulnerability 

An attacker, inside a guest system, can bypass access restrictions via IO Ports ...
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This computer threat alert impacts software or systems such as Linux.

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

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

An attacker with a expert ability can exploit this computer weakness bulletin.

Solutions for this threat 

Patches for this vulnerability are not yet public.
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