Buffer overflow in Cisco SD-WAN and Cisco SD-WAN vEdge Routers - CVE-2021-1433

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Main Vulnerability Database Vulnerabilities #VU51706

Buffer overflow in Cisco SD-WAN and Cisco SD-WAN vEdge Routers - CVE-2021-1433

Published: March 24, 2021


Vulnerability identifier: #VU51706
CSH Severity: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red
CVE-ID: CVE-2021-1433
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vulnerable software:
Cisco SD-WAN
Cisco SD-WAN vEdge Routers
Software vendor:
Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error when processing network traffic in the vDaemon process. A remote attacker can send specially crafted packets to the system, trigger memory corruption and execute arbitrary code on the target system with root privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

The following devices are affected by this vulnerability:

  • 1000 Series Integrated Services Routers (ISRs)
  • 4000 Series ISRs
  • 5400 Enterprise Network Compute System with Cisco Integrated Services Virtual Router (ISRv) installed
  • ASR 1000 Series Aggregation Services Routers
  • Cloud Services Router 1000V Series


Remediation

Install updates from vendor's website.

External links