SB2020050707 - Improper Verification of Cryptographic Signature in Cisco Firepower Threat Defense Software
Published: May 7, 2020 Updated: May 7, 2020
Security Bulletin ID
SB2020050707
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Data manipulation
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2020-3308)
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.