Path traversal in MikroTik RouterOS - CVE-2019-3976
Published: October 30, 2019
Vulnerability identifier: #VU22424
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2019-3976
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: MikroTik
Affected software:
MikroTik RouterOS
MikroTik RouterOS
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 the filenames of the packages. A remote attacker can trick the victim into installing an updated with a specially crafted name and enable developer shell.
How to mitigate CVE-2019-3976
Install updates from vendor's website.