SB2020060370 - Improper Verification of Cryptographic Signature in Cisco IOS XE
Published: June 3, 2020 Updated: November 1, 2022
Security Bulletin ID
SB2020060370
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Physical access
Highest impact
Code execution
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-2020-3209)
The vulnerability allows a local attacker to compromise the target system.
The vulnerability exists due to due to an improper check on the area of code that manages the verification of the digital signatures of system image files during the initial boot process. An attacker with physical access can install and boot a malicious software image or execute unsigned binaries on the target device.
Remediation
Install update from vendor's website.