SB2021032910 - Improper Verification of Cryptographic Signature in Cisco IOS XE
Published: March 29, 2021
Security Bulletin ID
SB2021032910
Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local 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-2021-1375)
The vulnerability allows a local user to compromise the target system.
The vulnerability exists in the fast reload feature due to incorrect validations of parameters passed to a configuration file that is executed when the device boots up. A local administrator can tamper with a configuration file stored on a device, execute unsigned code at boot time and bypass the software image verification check.
Remediation
Install update from vendor's website.