What’s Vulnerable › Vulnerabilities

CVE-2017-17743

• Severity: medium (CVSS 6.7 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2018-03-22 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper input sanitization within the restricted administration shell on UCOPIA Wireless Appliance devices before 4.4.20, 5.0.x before 5.0.19, and 5.1.x before 5.1.11 allows authenticated remote attackers to escape the shell and escalate their privileges by uploading a .bashrc file containing the /bin/sh string. In some situations, authentication can be achieved via the bhu85tgb default password for the admin account.

Affected products

• Ucopia Wireless Appliance Firmware: before 4.4.20; from 5.0 before 5.0.19; from 5.1 before 5.1.11 — fixed in 4.4.20, 5.0.19, 5.1.11

How to fix

Upgrade to a fixed version: Ucopia Wireless Appliance Firmware 4.4.20, 5.0.19, 5.1.11. Check the vendor advisory for mitigations.

References

• https://securite.intrinsec.com/2018/03/19/cve-2017-17743-ucopia-shell-escape/
• https://securite.intrinsec.com/2018/03/19/cve-2017-17743-ucopia-shell-escape/

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