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Barracuda WAF V360 Firmware 8.0.1.014 Grub Password Complexity

Barracuda WAF V360 Firmware 8.0.1.014 Grub Password Complexity
Posted Jul 6, 2017
Authored by Matthew Bergin, Joshua Hardin | Site korelogic.com

The grub password for all Barracuda WAF V360 virtual appliances is four characters in length and, as a result, may be trivially easy to crack. Firmware version 8.0.1.014 is affected.

tags | exploit
MD5 | 457c2a997735435dfef8ab76ca6ff141

Barracuda WAF V360 Firmware 8.0.1.014 Grub Password Complexity

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KL-001-2017-012 : Barracuda WAF Grub Password Complexity

Title: Barracuda WAF Grub Password Complexity
Advisory ID: KL-001-2017-012
Publication Date: 2017.07.06
Publication URL: https://www.korelogic.com/Resources/Advisories/KL-001-2017-012.txt


1. Vulnerability Details

Affected Vendor: Barracuda
Affected Product: Web Application Firewall V360
Affected Version: Firmware v8.0.1.014
Platform: Embedded Linux
CWE Classification: CWE-259: Use of Hard-coded Password
Impact: Privileged Access
Attack vector: Password Cracking

2. Vulnerability Description

The grub password for all V360 virtual appliances is four
characters in length and, as a result, may be trivially easy
to crack.

3. Technical Description

# grep "pbkdf2" grub.cfg
password_pbkdf2 root
grub.pbkdf2.sha512.10000.CA568B32B7E1F9A8ADC73224CD8AD1085B23FF5B69558D92E70961F4DEE3F5844CC4E3FC8FC4CBDB0941AC682B52DE64343F6847DF8AD480597B49EA65F48B41.0314A76ADA4989857110B3177617AECF8D38F99E417DCE2B1A289AD5F48C0DFC4969E76E10175399E8978DDE5DFD4B6E7EE808CD00CD6CA43512E92C2EB1D63A
#

This hash cracks to: bimg

4. Mitigation and Remediation Recommendation

The vendor has patched this vulnerability in the lastest
virtual appliance release.

5. Credit

This vulnerability was discovered by Matt Bergin (@thatguylevel)
of KoreLogic, Inc. and Joshua Hardin.

6. Disclosure Timeline

2016.12.20 - KoreLogic sends vulnerability report and PoC to
Barracuda.
2016.12.21 - Barracuda acknowledges receipt of the vulnerability
report.
2017.01.09 - Barracuda informs KoreLogic that they are working
on remediation for this issue.
2017.01.26 - Barracuda asks for additional time beyond the
standard 45 business day embargo to address this
and other issues reported by KoreLogic.
2017.02.27 - 45 business days have elapsed since the issue was
reported.
2017.04.10 - 75 business days have elapsed since the issue was
reported.
2017.05.15 - 100 business days have elapsed since the issue was
reported.
2017.05.24 - Barracuda updates KoreLogic on the status of the
remediation efforts.
2017.06.13 - 120 business days have elapsed since the issue was
reported.
2017.06.27 - Barracuda informs KoreLogic that the issue has
been fixed in the latest release of the WAF
virtual appliance.
2017.07.06 - KoreLogic public disclosure.

7. Proof of Concept

See 3. Technical Description


The contents of this advisory are copyright(c) 2017
KoreLogic, Inc. and are licensed under a Creative Commons
Attribution Share-Alike 4.0 (United States) License:
http://creativecommons.org/licenses/by-sa/4.0/

KoreLogic, Inc. is a founder-owned and operated company with a
proven track record of providing security services to entities
ranging from Fortune 500 to small and mid-sized companies. We
are a highly skilled team of senior security consultants doing
by-hand security assessments for the most important networks in
the U.S. and around the world. We are also developers of various
tools and resources aimed at helping the security community.
https://www.korelogic.com/about-korelogic.html

Our public vulnerability disclosure policy is available at:
https://www.korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt

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