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Vulnerability of Cisco ESA: denial of service via Zip Decompression

Synthesis of the vulnerability 

An attacker can trigger a fatal error via Zip Decompression of Cisco ESA, in order to trigger a denial of service.
Vulnerable software: AsyncOS, Cisco ESA.
Severity of this announce: 2/4.
Creation date: 22/01/2020.
Références of this computer vulnerability: CERTFR-2020-AVI-055, cisco-sa-esa-dos-87mBkc8n, CSCvq65126, CVE-2020-3134, VIGILANCE-VUL-31411.

Description of the vulnerability 

An attacker can trigger a fatal error via Zip Decompression of Cisco ESA, in order to trigger a denial of service.
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This cybersecurity announce impacts software or systems such as AsyncOS, Cisco ESA.

Our Vigil@nce team determined that the severity of this threat alert is medium.

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

An attacker with a expert ability can exploit this computer weakness alert.

Solutions for this threat 

Cisco ESA: solution CSCvq65126.
The solution is described on the Cisco site:
  https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvq65126
  https://tools.cisco.com/bugsearch/bug/CSCvq65126
  https://tools.cisco.com/quickview/bug/CSCvq65126
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