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Vulnerability of Cisco ASA Software: read-write access via FTP Inspection Engine Bypass

Synthesis of the vulnerability 

An attacker can bypass access restrictions via FTP Inspection Engine Bypass of Cisco ASA Software, in order to read or alter data.
Impacted products: ASA.
Severity of this bulletin: 2/4.
Creation date: 22/10/2020.
Références of this threat: CERTFR-2020-AVI-671, cisco-sa-asaftd-ftpbypass-HY3UTxYu, CSCvt13445, CVE-2020-3564, VIGILANCE-VUL-33669.

Description of the vulnerability 

An attacker can bypass access restrictions via FTP Inspection Engine Bypass of Cisco ASA Software, in order to read or alter data.
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This threat note impacts software or systems such as ASA.

Our Vigil@nce team determined that the severity of this cybersecurity note is medium.

The trust level is of type confirmed by the editor, with an origin of internet client.

An attacker with a expert ability can exploit this vulnerability note.

Solutions for this threat 

Cisco ASA Software: solution CSCvt13445.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvt13445
  https://tools.cisco.com/bugsearch/bug/CSCvt13445
  https://tools.cisco.com/quickview/bug/CSCvt13445
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