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Vulnerability of Cisco WSA: privilege escalation

Synthesis of the vulnerability 

An attacker can bypass restrictions of Cisco WSA, in order to escalate his privileges.
Vulnerable systems: AsyncOS, Cisco WSA.
Severity of this threat: 2/4.
Creation date: 16/08/2018.
Références of this weakness: CERTFR-2018-AVI-393, cisco-sa-20180815-wsa-escalation, CSCvj93548, CVE-2018-0428, VIGILANCE-VUL-26996.

Description of the vulnerability 

An attacker can bypass restrictions of Cisco WSA, in order to escalate his privileges.
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This threat bulletin impacts software or systems such as AsyncOS, Cisco WSA.

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

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

An attacker with a expert ability can exploit this computer threat.

Solutions for this threat 

Cisco WSA: solution CSCvj93548.
The solution is described on the Cisco site:
  https://tools.cisco.com/bugsearch/bug/CSCvj93548
  https://tools.cisco.com/quickview/bug/CSCvj93548
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