Citrix SD-WAN Vulnerabilities Threat Alert

Citrix SD-WAN Vulnerabilities Threat Alert

dezembro 16, 2020 | Mina Hao

Overview

Recently, Citrix SD-WAN released a security update to address three vulnerabilities (CVE-2020-8271, CVE-2020-8272, CVE-2020-8273). These vulnerabilities allow an unauthenticated attacker with network access to SD-WAN Center to perform arbitrary code execution as root.

At present, there exist detailed analysis of relevant vulnerabilities and the proof of concept (POC) concerning CVE-2020-8271.

Vulnerability Description

CVEVulnerability ImpactPre-conditions
CVE-2020-8271Unauthenticated remote code execution with root privilegesAn attacker must be able to communicate with SD-WAN Center’s Management IP/FQDN.
CVE-2020-8272Authentication bypass resulting in exposure of SD-WAN functionality
CVE-2020-8273Privilege escalation of an authenticated user to rootThe attacker must be an authenticated user on SD-WAN Center.

Affected Versions

  • Citrix SD-WAN before 11.2.2
  • Citrix SD-WAN before 11.1.2b
  • Citrix SD-WAN before 10.2.8

Unaffected Versions

  • Citrix SD-WAN 11.2.2 and later versions of Citrix SD-WAN 11.2
  • Citrix SD-WAN 11.1.2b and later versions of Citrix SD-WAN 11.1
  • Citrix SD-WAN 10.2.8 and later versions of Citrix SD-WAN 10.2

Solution

       Citrix has released the latest versions to fix the preceding vulnerabilities. Affected users are advised to upgrade as soon as possible.

       The latest versions are available at the following link:

https://www.citrix.com/en-gb/downloads/citrix-sd-wan/

Reference Links

https://support.citrix.com/article/CTX285061
https://medium.com/realmodelabs/sd-pwn-part-2-citrix-sd-wan-center-another-network-takeover-a9c950a1a27c

Statement

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About NSFOCUS

NSFOCUS, Inc., a global network and cyber security leader, protects enterprises and carriers from advanced cyber attacks. The company’s Intelligent Hybrid Security strategy utilizes both cloud and on-premises security platforms, built on a foundation of real-time global threat intelligence, to provide multi-layered, unified and dynamic protection against advanced cyber attacks.

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