PT-2021-13795 · Unknown · Gryphon Tower Router

Published 2021-12-09 · Updated 2021-12-13 · CVE-2021-20138

Positive Technologies (AI Summary)

CVSS v3.1

8.8

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: Gryphon Tower router (affected versions not specified)

Description: An unauthenticated command injection issue exists in the Gryphon Tower router’s web interface at "/cgi-bin/luci/rc". This allows an unauthenticated remote attacker on the same network to execute commands as root on the device by sending a specially crafted malicious packet to the web interface. The issue is related to multiple parameters.

Recommendations: As a temporary workaround, consider restricting access to the "/cgi-bin/luci/rc" endpoint until a patch is available. Avoid using the vulnerable parameters 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

OS Command Injection

Weakness Enumeration

CWE-78

Related Identifiers

CVE-2021-20138

Affected Products

Gryphon Tower Router

References · 4

• 🔥 https://tenable.com/security/research/tra-2021-51 · Exploit
• https://osv.dev/vulnerability/CVE-2021-20138 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-20138 · Security Note
• https://t.me/cibsecurity/33695 · Telegram Post