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Vulnerability of Cisco Web Security Appliance: privilege escalation via Decryption Policy Bypass

Synthesis of the vulnerability 

An attacker can bypass restrictions via Decryption Policy Bypass of Cisco Web Security Appliance, in order to escalate his privileges.
Impacted products: AsyncOS, Cisco WSA.
Severity of this bulletin: 2/4.
Creation date: 07/02/2019.
Références of this threat: cisco-sa-20190206-wsa-bypass, CSCvm91630, CVE-2019-1672, VIGILANCE-VUL-28461.

Description of the vulnerability 

An attacker can bypass restrictions via Decryption Policy Bypass of Cisco Web Security Appliance, in order to escalate his privileges.
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This cybersecurity bulletin impacts software or systems such as AsyncOS, Cisco WSA.

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

Solutions for this threat 

Cisco Web Security Appliance: solution CSCvm91630.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvm91630
  https://tools.cisco.com/bugsearch/bug/CSCvm91630
  https://tools.cisco.com/quickview/bug/CSCvm91630
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Computer vulnerabilities tracking service 

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