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Vulnerability of Cisco ASA Software: denial of service via OSPFv2 Link-Local Signaling

Synthesis of the vulnerability 

An attacker can trigger a fatal error via OSPFv2 Link-Local Signaling of Cisco ASA Software, in order to trigger a denial of service.
Impacted software: ASA.
Severity of this computer vulnerability: 2/4.
Creation date: 22/10/2020.
Références of this announce: CERTFR-2020-AVI-671, cisco-sa-asaftd-ospflls-37Xy2q6r, CSCvt83121, CVE-2020-3528, VIGILANCE-VUL-33670.

Description of the vulnerability 

An attacker can trigger a fatal error via OSPFv2 Link-Local Signaling of Cisco ASA Software, in order to trigger a denial of service.
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This threat announce impacts software or systems such as ASA.

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

Solutions for this threat 

Cisco ASA Software: solution CSCvt83121.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt83121
  https://tools.cisco.com/bugsearch/bug/CSCvt83121
  https://tools.cisco.com/quickview/bug/CSCvt83121
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