SB2018102302 - Remote code execution in Naviwebs Navigate CMS

Description

This security bulletin contains information about 1 vulnerability.

1) Arbitrary file upload (CVE-ID: CVE-2018-17553)

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Amber

The vulnerability allows a remote attacker to conduct directory traversal attack on the target system.

The vulnerability exists in the navigate_upload.php code due to insufficient validation of user-supplied input. A remote attacker can send a POST request with engine=picnik and id=../../../navigate_info.php. that submits malicious directory traversal characters, upload PHP files to arbitrary locations on the system, bypass authentication and execute arbitrary code with elevated privileges.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/rapid7/metasploit-framework/pull/10704
• https://github.com/NavigateCMS/Navigate-CMS/commit/2bdcb8b3c5bb23851a2115db96585f1ac8cb2d1e