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Vulnerability of Juniper Secure Access SSL VPN: privilege escalation via update.cgi

Synthesis of the vulnerability 

An attacker can bypass restrictions via update.cgi of Juniper Secure Access SSL VPN, in order to escalate his privileges.
Vulnerable products: IVE OS, Juniper SA.
Severity of this weakness: 2/4.
Creation date: 27/12/2018.
Références of this bulletin: CVE-2018-20193, VIGILANCE-VUL-28104.

Description of the vulnerability 

An attacker can bypass restrictions via update.cgi of Juniper Secure Access SSL VPN, in order to escalate his privileges.
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This computer threat impacts software or systems such as IVE OS, Juniper SA.

Our Vigil@nce team determined that the severity of this computer vulnerability alert 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 cybersecurity weakness.

Solutions for this threat 

Juniper Secure Access SSL VPN: workaround for update.cgi.
A workaround is to use a supported version.
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