Execution with unnecessary privileges in Cisco Systems, Inc products - CVE-2021-1528

Vulnerability identifier: #VU53756

CSH Severity: Low

CVSS v4: 8.5 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-1528

CWE-ID: CWE-250

Exploitation vector: Local access

Exploit availability: No public exploit available

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

The vulnerability exists due to the affected software does not properly restrict access to privileged processes. A local user can invoke a privileged process in the affected system and perform actions with the privileges of the root user.

Cisco SD-WAN vBond Orchestrator
Cisco SD-WAN vEdge Cloud Router
Cisco SD-WAN vEdge Routers
Catalyst SD-WAN Manager (formerly SD-WAN vManage)
Catalyst SD-WAN Controller (formerly SD-WAN vSmart)

Install updates from vendor's website.

Cisco SD-WAN vBond Orchestrator - addressed in versions 20.4.2, 20.5.1
Cisco SD-WAN vEdge Cloud Router - addressed in versions 20.4.2, 20.5.1
Cisco SD-WAN vEdge Routers - addressed in versions 20.4.2, 20.5.1
Catalyst SD-WAN Manager (formerly SD-WAN vManage) - addressed in versions 20.4.2, 20.5.1
Catalyst SD-WAN Controller (formerly SD-WAN vSmart) - addressed in versions 20.4.2, 20.5.1

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sd-wan-fuErCWwF

• Privilege escalation in Cisco SD-WAN Software