PT-2017-3170 · Sonicwall · Sonicwall Secure Remote Access

Published 2017-02-22 · Updated 2018-10-17 · CVE-2016-9683

Positive Technologies (AI Summary)

CVSS v2.0

10

Critical

Base vector

AV:N/AC:L/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions SonicWall Secure Remote Access server version 8.1.0.2-14sv

Description The vulnerability occurs in the 'extensionsettings' CGI component, specifically in the /cgi-bin/extensionsettings API endpoint, which handles internal server configurations. It is caused by the lack of input sanitization, allowing remote command injection through the scriptname variable. Exploitation of this issue yields shell access to the remote machine under the nobody user account.

Recommendations For version 8.1.0.2-14sv, as a temporary workaround, consider disabling the /cgi-bin/extensionsettings API endpoint until a patch is available. Restrict access to the extensionsettings CGI component to minimize the risk of exploitation. Avoid using the scriptname variable in the affected API endpoint until the issue is resolved. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Command Injection

Weakness Enumeration

CWE-77

Related Identifiers

BDU:2017-02582

CVE-2016-9683

Affected Products

Sonicwall Secure Remote Access

References · 8

• 🔥 https://exploit-db.com/exploits/41415 · Exploit
• https://osv.dev/vulnerability/CVE-2016-9683 · Vendor Advisory
• http://documents.software.dell.com/sonicwall-sma-100-series/8.1.0.7/release-notes/resolved-issues?ParentProduct=868 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2016-9683 · Security Note
• https://bdu.fstec.ru/vul/2017-02582 · Security Note
• http://pastebin.com/eJbeXgBr · Note
• http://securityfocus.com/bid/96375 · Note
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2016-0004 · Note