CVE-2020-3437: cisco cisco sd-wan vmanage Link Following

Vulnerability summary

CVE-2020-3437 is a medium (CVSS 6.5) Link Following vulnerability in cisco cisco sd-wan vmanage. EPSS estimates a 2.88% chance of exploitation in the next 30 days, higher than 86.6% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 16-07-2020
   PublishedVulnerability first disclosed.
2. 13-11-2024
   Last modifiedVulnerability information updated.

Description

A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying filesystem of the device. The vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the filesystem and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the filesystem of the underlying operating system.

• CWE-59Improper Link Resolution Before File Access ('Link Following')The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.