PT-2018-6532 · Zyxel · Zywall/Usg

Simone Cardona · Published 2018-11-10 · Updated 2018-12-13 · CVE-2017-17550

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: ZyXEL ZyWALL USG versions 2.12 AQQ.2 through 3.30 AQQ.7

Description: The issue allows for a CSRF attack via the "cgi-bin/zysh-cgi" endpoint with a cmd action to add a user account. This added account could then be used for stored XSS attacks.

Recommendations: For versions 2.12 AQQ.2 through 3.30 AQQ.7, as a temporary workaround, consider restricting access to the "cgi-bin/zysh-cgi" endpoint to minimize the risk of exploitation. Avoid using the cmd action in this 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

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

CVE-2017-17550

Affected Products

Zywall/Usg

References · 3

• 🔥 https://shellcode.it/article/cve-2017-17550 · Exploit
• https://osv.dev/vulnerability/CVE-2017-17550 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-17550 · Security Note