Security Advisory

Barracuda WAF Grub Password Complexity

CWE-259 Use of Hard-coded Password

Advisory ID

KL-001-2017-012

Published

2017-07-06

Vendor

Barracuda

Affected Systems

Product

Web Application Firewall V360

Version

Firmware v8.0.1.014

Platform

Embedded Linux

Discovered By

Matt Bergin (KoreLogic)

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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

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.

Technical Description

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

This hash cracks to: bimg

Mitigation and Remediation Recommendation

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

Credit

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

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://korelogic.com/KoreLogic-Public-Vulnerability-Disclosure-Policy.v2.2.txt

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.

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Responsible Disclosure

KoreLogic follows responsible disclosure practices. All vulnerabilities are reported to affected vendors with appropriate time for remediation before public disclosure.

Vendor notification and coordination

90+ day disclosure timeline

CVE coordination when applicable

Resources & Downloads

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