Exploitalert - Database of Exploits

Barracuda SSL VPN 680 2.2.2.203 Redirect Web Vulnerability

CVE	Category	Price	Severity
CVE-2019-15703	CWE-601	Not specified	High

Author	Risk	Exploitation Type	Date
Eduardo Braun Prado	High	Remote	2013-05-28

CPE
cpe:cpe:/a:barracuda:ssl_vpn:680-2-2-2-203

CVSS	EPSS	EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	0.021	0.44076

CVSS vector description

Metric	Value	Metric Description	Value Description
Attack vector	Network	AV	The vulnerable system is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers). An example of a network attack is an attacker causing a denial of service by sending a specially crafted TCP packet across a wide area network (e.g., CVE-2004-0230).
Attack Complexity	Low	AC	The attacker must take no measurable action to exploit the vulnerability. The attack requires no target-specific circumvention to exploit the vulnerability. An attacker can expect repeatable success against the vulnerable system.
Privileges Required	None	PR	The attacker is unauthenticated prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.
User Interaction	None	UI	The vulnerable system can be exploited without interaction from any human user, other than the attacker. Examples include: a remote attacker is able to send packets to a target system a locally authenticated attacker executes code to elevate privileges
Scope	Unchanged	S	An exploited vulnerability can only affect resources managed by the same security authority. In the case of a vulnerability in a virtualized environment, an exploited vulnerability in one guest instance would not affect neighboring guest instances.
Confidentiality	None	C	There is no impact on the confidentiality of the system; the attacker does not gain the ability to read any data.
Integrity	None	I	There is no impact on the integrity of the system; the attacker does not gain the ability to modify any files or information on the target system.
Availability	High	A	There is a total shutdown of the affected resource. The attacker can deny access to the system or data, potentially causing significant loss to the organization.

http://cxsecurity.com/ascii/WLB-2013050193

Title: ====== Barracuda SSL VPN 680 2.2.2.203 - Redirect Web Vulnerability Date: ===== 2013-05-25 References: =========== http://www.vulnerability-lab.com/get_content.php?id=755 Barracuda Networks Security ID (BNSEC): 731 VL-ID: ===== 755 Common Vulnerability Scoring System: ==================================== 1.3 Introduction: ============= The Barracuda SSL VPN is an integrated hardware and software solution enabling secure, clientless remote access to internal network resources from any Web browser. Designed for remote employees and road warriors, the Barracuda SSL VPN provides comprehensive control over file systems and Web-based applications requiring external access. The Barracuda SSL VPN integrates with third-party authentication mechanisms to control user access levels and provides single sign-on. Barracuda SSL VPN * Enables access to corporate intranets, file systems or other Web-based applications * Tracks resource access through auditing and reporting facilities * Scans uploaded files for viruses and malware * Leverages multi-factor, layered authentication mechanisms, including RSA SecurID and VASCO tokens * Integrates with existing Active Directory and LDAP directories * Utilizes policies for granular access control framework * Supports any Web browser on PC or Mac (Copy of the Vendor Homepage: http://www.barracudanetworks.com/ns/products/sslvpn.php) Abstract: ========= The Vulnerability Laboratory Research Team discovered a redirect vulnerability in the official Barracuda Networks SSL VPN 680 v2.2.2.203. Report-Timeline: ================ 2012-11-11: Researcher Notification & Coordination 2012-11-12: Vendor Notification 2012-11-19: Vendor Response/Feedback 2013-02-20: Vendor Fix/Patch 2012-05-27: PublicDisclosure Status: ======== Published Affected Products: ================== Barracuda Networks Product: SSL VPN 680 2.2.2.203 Exploitation-Technique: ======================= Remote Severity: ========= Low Details: ======== A remote redirection (external) vulnerability is detected in the Barracuda SSL VPN 680 v2.2.2.203 (Vx) Web Application Appliance. The bug allows remote attackers to prepare links to client side external redirects with malware, phishing websites or malicious web context. The vulnerability is located in the resourceId parameter request when processing to load via GET method an internal `returnTo` file redirect. Vulnerable Module(s): [+] launchApplication.do [resourceId] Vulnerable Parameter(s): [+] returnTo Proof of Concept: ================= The vulnerability can be exploited by remote attacker without privileged application user account but with medium or high required user inter action. For demonstration or reproduce ... 1.1 The first url shows the standard request via GET request https://sslvpn.127.0.0.1:8080/launchApplication.do?resourceId=1&policy=1&returnTo=%2FshowApplicationShortcuts.do 1.2 The secound url shows the manipulated remote context via GET request https://sslvpn.127.0.0.1:8080/launchApplication.do?resourceId=1&policy=1&returnTo=http://www.vulnerability-lab.com https://sslvpn.[SERVER]/[FILE].do?[RES+ID]=x&[POLICY]=x&returnTo=[EXTERNAL TARGET] Solution: ========= The vulnerability can be patched by allowing only local file requests when processing to load the vulnerable returnTo parameter via GET. 2013-02-20: Vendor Fix/Patch Risk: ===== The security risk of the redirection vulnerability is estimated as low(+). Credits: ======== Vulnerability Laboratory [Research Team] - Chokri Ben Achour (meister () vulnerability-lab com) Barracuda Networks [Security Team] - Dave Farrow (Communication & Coordination) 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. 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