PT-2017-14439 · Unknown+1 · Web Viewer+1

0Xffffff + 1 · Published 2017-11-06 · Updated 2017-11-29 · CVE-2017-16524

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions Web Viewer version 1.0.0.193

Description The issue allows remote authenticated attackers to upload and execute arbitrary PHP code via a filename with a .php extension in the "network ssl upload.php" endpoint. This is achieved by accessing the uploaded file directly in the upload/ directory. Authentication for this attack can be obtained by leveraging an existing Local File Read issue, which allows remote attackers to read web-interface credentials in cleartext via a request to the "cslog export.php?path=/root/php modules/lighttpd/sbin/userpw" URI.

Recommendations For Web Viewer version 1.0.0.193, restrict access to the "network ssl upload.php" endpoint to prevent arbitrary PHP code execution. As a temporary workaround, consider disabling the upload functionality in the "network ssl upload.php" endpoint until a patch is available. Additionally, restrict access to the "cslog export.php" endpoint to minimize the risk of credential exposure.

Exploit

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2017-16524

Affected Products

Web Viewer

Lighttpd

References · 5

• 🔥 https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/linux/http/samsung_srv_1670d_upload_exec.rb · Exploit
• 🔥 https://github.com/realistic-security/CVE-2017-16524 · Exploit
• 🔥 https://exploit-db.com/exploits/43138 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2017-16524 · Security Note
• https://osv.dev/vulnerability/CVE-2017-16524 · Vendor Advisory