CVE-2020-11498: slack nebula Path Traversal

Vulnerability summary

CVE-2020-11498 is a high (CVSS 8.8) Path Traversal vulnerability in slack nebula. EPSS estimates a 3.40% chance of exploitation in the next 30 days, higher than 88.7% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-04-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go. A user can also use Nebula to execute arbitrary code in the user's own context, e.g., for user-level persistence or to bypass security controls. NOTE: the vendor states that this "requires a high degree of access and other preconditions that are tough to achieve."

• CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.