Vulnerability identifier: #VU51232

Vulnerability risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1461

CWE-ID: CWE-347

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco SD-WAN vEdge Routers
Hardware solutions / Routers & switches, VoIP, GSM, etc
Cisco SD-WAN vManage
Other software / Other software solutions

Vendor:

Description

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.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-sigverbypass-gPYXd6Mk

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.