SB2021030427 - Improper Verification of Cryptographic Signature in Cisco SD-WAN vEdge Router and Cisco SD-WAN vManage
Published: March 4, 2021
Security Bulletin ID
SB2021030427
CSH 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 vulnerability.
1) Improper Verification of Cryptographic Signature (CVE-ID: CVE-2021-1461)
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 compromise the target system.
The vulnerability exists due to improper verification of digital signatures for patch images. A remote administrator can use an unsigned software patch to bypass signature checks and boot a malicious software patch image.
Remediation
Install update from vendor's website.