Title: Synaccess netBooter NP-02x/NP-08x 6.8 Authentication Bypass
Advisory ID: ZSL-2018-5500
Type: Local/Remote
Impact: Security Bypass, System Access
Risk: (5/5)
Release Date: 17.11.2018

Summary

netBooter™ NP-02B and NP-02BH provide independent control of one or two outlets in a small, robust form factor. Manageable via TCP/IP network or direct serial connection and 1U brackets (optional) for mounting. Control power to your devices with the ability to fit just about anywhere

netBooter™ NP-0801DU and NP-0801DUH PDUs provide secured remote power source management of 8 independent outlets. Includes true RMS AC current reading and environment temperature monitoring* via TCP/IP networks or local direct connection.

Description

netBooter suffers from an authentication bypass vulnerability due to missing control check when calling webNewAcct.cgi script while creating users. This allows an unauthenticated attacker to create admin user account and bypass authentication giving her the power to turn off a power supply to a resource.

Vendor

Synaccess Networks Inc. - https://www.synaccess-net.com

Affected Version

NP-0201D (ver 6.8C)
NP-02 (ver 6.5C)
NP-02 (ver 6.4BC)
NP-0801D (ver 6.4A)
NP-08 (ver 6.10)
NP-02 (ver 5.53BC)

Tested On

Synaccess server

Vendor Status

[05.11.2018] Vulnerability discovered.
[06.11.2018] Vendor contacted.
[16.11.2018] No response from the vendor.
[17.11.2018] Public security advisory released.

PoC

netbooter_auth.txt

Credits

Vulnerability discovered by Gjoko Krstic - <gjoko@zeroscience.mk>

References

[1] https://packetstormsecurity.com/files/150396
[2] https://exchange.xforce.ibmcloud.com/vulnerabilities/153124
[3] https://cxsecurity.com/issue/WLB-2018110158
[4] https://www.exploit-db.com/exploits/45920

Changelog

[17.11.2018] - Initial release
[20.11.2018] - Added reference [1] and [2]
[23.11.2018] - Added reference [3]
[01.12.2018] - Added reference [4]

Contact

Zero Science Lab

Web: http://www.zeroscience.mk
e-mail: lab@zeroscience.mk