Document Title: =============== Barracuda Message Archiver 650 - Persistent Vulnerability Date: ===== 2013-02-27 References: =========== http://www.vulnerability-lab.com/get_content.php?id=743 VL-ID: ===== 743 Common Vulnerability Scoring System: ==================================== 3.5 Introduction: ============= The Barracuda Message Archiver is a complete and affordable email archiving solution, enabling you to effectively index and preserve all emails, enhance operational efficiencies and enforce policies for regulatory compliance. By leveraging standard policies and seamless access to messages, email content is fully indexed and backed up to enable administrators, auditors and end users quick retrieval of any email message stored in an organization’s email archive. * Comprehensive archiving * Exchange stubbing * Search and retrieval * Policy management * Intelligent Storage Manager * Roles-based interface * Reporting and statistics The Barracuda Message Archiver provides everything an organization needs to comply with government regulations in an easy to install and administer plug-and-play hardware solution. The Barracuda Message Archiver stores and indexes all email for easy search and retrieval by both regular users and third-party auditors. Backed by Energize Updates, delivered by Barracuda Central, the Barracuda Message Archiver receives automatic updates to its extensive library of virus, policy definitions to enable enhanced monitoring of compliance and corporate guidelines, document file format updates needed to decode content within email attachments, as well as security updates for the underlying Barracuda Message Archiver platform to protect against any potential security vulnerabilities. (Copy of the Vendor Homepage: http://www.barracudanetworks.com/) Abstract: ========= The Vulnerability Laboratory Research Team discovered a persistent web vulnerability in Barracudas Messsage Archiver 3.1.0.914 Appliance Application. Report-Timeline: ================ 2012-11-03: Researcher Notification & Coordination 2012-11-05: Vendor Notification 2013-01-22: Vendor Response/Feedback 2013-02-12: Vendor Fix/Patch 2013-02-28: Public Disclosure (Vulnerability Laboratory) Status: ======== Published Affected Products: ================== Barracuda Networks Product: Message Archiver 650 - Appliance Application v3.1.0.914 Exploitation-Technique: ======================= Remote Severity: ========= Medium Details: ======== A persistent input validation vulnerability has been discovered in the Barracuda Networks Message Archiver 650 v3.1.0.914 Appliance Application. The vulnerability allows remote attackers to inject own malicious script codes on the application-side of the vulnerable message archiver application. The vulnerability is located in the vulnerable `Benutzername & Verzeichnis` (username & path) parameter values in connection with the backup module service. The attacker injects via POST method request own malicious script codes through the `Automated Configuration Backups` of barracuda. The execution of the code after the inject occurs on the application-side next to the upcoming `sock_info: Bad service` exception. The security risk of the bypass and persistent input validation vulnerabilities are estimated as medium with a cvss (common vulnerability scoring system) count of 3.5. Exploitation of the persistent web vulnerability requires low user interaction and a local privileged web-application account. Successful exploitation of the vulnerability can lead to persistent session hijacking (customers), account steal via persistent web attacks, persistent phishing or persistent manipulation of module context. Request Method(s): [+] POST Vulnerable Module(s): [+] Advanced > Backup Settings > Automated Configuration Backups Vulnerable Parameter(s): [+] Benutzername & Verzeichnis / Pfad (Aufgrund des folgenden Fehlers: sock_info: Bad service :redisplay) Affected Module(s): [+] Exception Handling - sock_info: Bad service Proof of Concept: ================= The persistent web vulnerability can be exploited by local low privileged user accounts with low or medium required user inter action. For security demonstration or to reproduce the security vulnerability follow the provided information and steps below to continue. PoC: Advanced > Backup Settings > Automated Configuration Backups
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Solution: ========= The vulnerability can be patched by a secure parse and encode of the ftp information credentials and the backsock exception output context. Filter the inputs of the ftp module and parse + encode the output context to prevent further injection attacks. Risk: ===== The security risk of the persistent input validation web vulnerability is estimated as medium. Credits: ======== Vulnerability Laboratory [Research Team] - Benjamin Kunz Mejri (bkm@vulnerability-lab.com) [www.vulnerability-lab.com] Disclaimer: =========== The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. Vulnerability-Lab or its suppliers are not liable in any case of damage, including direct, indirect, incidental, consequential loss of business profits or special damages, even if Vulnerability-Lab or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. We do not approve or encourage anybody to break any vendor licenses, policies, deface websites, hack into databases or trade with fraud/stolen material. Domains: www.vulnerability-lab.com - www.vuln-lab.com - www.evolution-sec.com Contact: admin@vulnerability-lab.com - research@vulnerability-lab.com - admin@evolution-sec.com Section: dev.vulnerability-db.com - forum.vulnerability-db.com - magazine.vulnerability-db.com Social: twitter.com/#!/vuln_lab - facebook.com/VulnerabilityLab - youtube.com/user/vulnerability0lab Feeds: vulnerability-lab.com/rss/rss.php - vulnerability-lab.com/rss/rss_upcoming.php - vulnerability-lab.com/rss/rss_news.php Programs: vulnerability-lab.com/submit.php - vulnerability-lab.com/list-of-bug-bounty-programs.php - vulnerability-lab.com/register/ Any modified copy or reproduction, including partially usages, of this file requires authorization from Vulnerability Laboratory. Permission to electronically redistribute this alert in its unmodified form is granted. All other rights, including the use of other media, are reserved by Vulnerability-Lab Research Team or its suppliers. All pictures, texts, advisories, source code, videos and other information on this website is trademark of vulnerability-lab team & the specific authors or managers. To record, list (feed), modify, use or edit our material contact (admin@vulnerability-lab.com or research@vulnerability-lab.com) to get a permission. Copyright © 2014 | Vulnerability Laboratory [Evolution Security]