SB2020050707 - Improper Verification of Cryptographic Signature in Cisco Firepower Threat Defense Software

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Main Vulnerability Database SB2020050707

SB2020050707 - Improper Verification of Cryptographic Signature in Cisco Firepower Threat Defense Software

Published: May 7, 2020 Updated: May 7, 2020

Security Bulletin ID SB2020050707
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2020-3308)

CWE-ID: CWE-347 - Improper Verification of Cryptographic Signature

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote user to install a malicious software patch on an affected device.

The vulnerability exists due to improper verification of digital signatures for patch images in the Image Signature Verification feature. A remote administrator can craft an unsigned software patch, bypass signature checks, load it on an affected device and boot a malicious software patch image.


Remediation

Install update from vendor's website.

References