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Vulnerability of Cisco IOS: denial of service via PTP

Synthesis of the vulnerability 

An attacker can send malicious PTP packets to Cisco IOS, in order to trigger a denial of service.
Impacted products: IOS by Cisco.
Severity of this bulletin: 2/4.
Creation date: 27/09/2018.
Références of this threat: CERTFR-2018-AVI-458, cisco-sa-20180926-ptp, CSCvf94015, CSCvh77659, CSCvn28545, CVE-2018-0473, VIGILANCE-VUL-27339.

Description of the vulnerability 

An attacker can send malicious PTP packets to Cisco IOS, in order to trigger a denial of service.
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This computer weakness announce impacts software or systems such as IOS by Cisco.

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

Solutions for this threat 

Cisco IOS: solution CSCvf94015 CSCvh77659 CSCvn28545.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvf94015
  https://tools.cisco.com/bugsearch/bug/CSCvf94015
  https://tools.cisco.com/quickview/bug/CSCvf94015
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvh77659
  https://tools.cisco.com/bugsearch/bug/CSCvh77659
  https://tools.cisco.com/quickview/bug/CSCvh77659
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvn28545
  https://tools.cisco.com/bugsearch/bug/CSCvn28545
  https://tools.cisco.com/quickview/bug/CSCvn28545
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