Privilege escalation in Cisco SD-WAN Software

1) Input validation error

EUVDB-ID: #VU52934

Risk: Low

CVSSv3.1: 7.7 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-1514

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to insufficient validation of user-supplied input. A local user can inject and execute arbitrary OS commands with Administrator privileges.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Cisco SD-WAN vBond Orchestrator: before 20.5.1

Cisco SD-WAN vEdge Routers: before 20.5.1

Cisco SD-WAN vEdge Cloud Router: before 20.5.1

Cisco SD-WAN vManage: before 20.5.1

Cisco SD-WAN vSmart Controller: before 20.5.1

External links

http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-privesc-QVszVUPy
http://bst.cloudapps.cisco.com/bugsearch/bug/CSCvi69989

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

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