Path traversal in Nebula - CVE-2020-11498
Published: April 8, 2020 / Updated: April 9, 2020
Vulnerability identifier: #VU26721
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2020-11498
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Slack Technologies, Inc.
Affected software:
Nebula
Nebula
Detailed vulnerability description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in "tun_darwin.go" and "tun_windows.go" file. A remote authenticated attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Successful exploitation of this vulnerability may lead to remote code execution.
How to mitigate CVE-2020-11498
Install update from vendor's website.