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Vulnerability of Juniper Junos J-Web: directory traversal

Synthesis of the vulnerability 

An attacker can traverse directories of Juniper Junos J-Web, in order to read a file outside the service root path.
Impacted systems: Juniper EX-Series, Junos OS, MX-Series, PTX-Series, QFX-Series, SRX-Series.
Severity of this alert: 2/4.
Creation date: 28/04/2020.
Références of this alert: CERTFR-2020-AVI-247, CVE-2020-1631, JSA11021, VIGILANCE-VUL-32111.

Description of the vulnerability 

An attacker can traverse directories of Juniper Junos J-Web, in order to read a file outside the service root path.
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This computer vulnerability alert impacts software or systems such as Juniper EX-Series, Junos OS, MX-Series, PTX-Series, QFX-Series, SRX-Series.

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

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

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

Solutions for this threat 

Juniper Junos: fixed versions for J-Web.
Fixed versions are indicated in information sources.
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