Input validation error in Cisco Systems, Inc products - CVE-2021-1513

Vulnerability identifier: #VU52932

CSH Severity: Medium

CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]

CVE-ID: CVE-2021-1513

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input in the vDaemon process. A remote attacker can send specially crafted packets to the system and perform a denial of service (DoS) attack.

Cisco SD-WAN vBond Orchestrator
Cisco SD-WAN vEdge Routers
Cisco SD-WAN vEdge Cloud Router
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 20.4.1, 20.5.1
Cisco SD-WAN vEdge Routers - addressed in versions 20.4.1, 20.5.1
Cisco SD-WAN vEdge Cloud Router - addressed in versions 20.4.1, 20.5.1
Catalyst SD-WAN Manager (formerly SD-WAN vManage) - addressed in versions 20.4.1, 20.5.1
Catalyst SD-WAN Controller (formerly SD-WAN vSmart) - addressed in versions 20.4.1, 20.5.1

• https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sdwan-dos-Ckn5cVqW
• https://bst.cloudapps.cisco.com/bugsearch/bug/CSCvu28378

• Denial of service in Cisco SD-WAN Software vDaemon