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Vulnerability of Cisco IP Phone 8800: denial of service via SIP Web Management Interface File Upload

Synthesis of the vulnerability 

An attacker can trigger a fatal error via SIP Web Management Interface File Upload of Cisco IP Phone 8800, in order to trigger a denial of service.
Vulnerable systems: Cisco IP Phone.
Severity of this threat: 2/4.
Creation date: 21/03/2019.
Références of this weakness: cisco-sa-20190320-ipfudos, CSCvo58440, CVE-2019-1766, VIGILANCE-VUL-28796.

Description of the vulnerability 

An attacker can trigger a fatal error via SIP Web Management Interface File Upload of Cisco IP Phone 8800, in order to trigger a denial of service.
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This cybersecurity vulnerability impacts software or systems such as Cisco IP Phone.

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

Solutions for this threat 

Cisco IP Phone 8800: solution CSCvo58440.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvo58440
  https://tools.cisco.com/bugsearch/bug/CSCvo58440
  https://tools.cisco.com/quickview/bug/CSCvo58440
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