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Last updated: 5/30/2016 5:52:36 PM

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Vulnerability Summary for CVE-2009-2631

Original release date: 12/04/2009
Last revised: 12/21/2010


Multiple clientless SSL VPN products that run in web browsers, including Stonesoft StoneGate; Cisco ASA; SonicWALL E-Class SSL VPN and SonicWALL SSL VPN; SafeNet SecureWire Access Gateway; Juniper Networks Secure Access; Nortel CallPilot; Citrix Access Gateway; and other products, when running in configurations that do not restrict access to the same domain as the VPN, retrieve the content of remote URLs from one domain and rewrite them so they originate from the VPN's domain, which violates the same origin policy and allows remote attackers to conduct cross-site scripting attacks, read cookies that originated from other domains, access the Web VPN session to gain access to internal resources, perform key logging, and conduct other attacks. NOTE: it could be argued that this is a fundamental design problem in any clientless VPN solution, as opposed to a commonly-introduced error that can be fixed in separate implementations. Therefore a single CVE has been assigned for all products that have this design.


CVSS Severity (version 2.0):
CVSS v2 Base Score: 6.8 MEDIUM
Impact Subscore: 6.4
Exploitability Subscore: 8.6
CVSS Version 2 Metrics:
Access Vector: Network exploitable - Victim must voluntarily interact with attack mechanism
Access Complexity: Medium
Authentication: Not required to exploit
Impact Type: Allows unauthorized disclosure of information; Allows unauthorized modification; Allows disruption of service

References to Advisories, Solutions, and Tools

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External Source: VUPEN
Name: ADV-2009-3571
Type: Advisory
External Source: XF
Name: sslvpn-sameorigin-security-bypass(54523)
External Source: BUGTRAQ
Name: 20091202 Same-origin policy bypass vulnerabilities in several VPN products reported
External Source: CONFIRM
Name: http://www.sonicwall.com/us/2123_14882.html
Type: Advisory
External Source: FULLDISC
Name: 20060608 SSL VPNs and security
External Source: CONFIRM
Name: http://kb.juniper.net/KB15799
External Source: CONFIRM
Name: http://www116.nortel.com/pub/repository/CLARIFY/DOCUMENT/2009/50/025367-01.pdf
External Source: CONFIRM
Name: http://www.sonicwall.com/us/2123_14883.html
Type: Advisory
External Source: SECTRACK
Name: 1023255
External Source: VUPEN
Name: ADV-2009-3569
Type: Advisory
External Source: VUPEN
Name: ADV-2009-3568
Type: Advisory
External Source: VUPEN
Name: ADV-2009-3567
Type: Advisory
External Source: FULLDISC
Name: 20060609 Re: SSL VPNs and security
US-CERT Vulnerability Note: CERT-VN
Name: VU#261869
External Source: CONFIRM
Name: http://www.stonesoft.com/en/support/security_advisories/2009_03_12.html
Type: Advisory
External Source: FULLDISC
Name: 20060609 Re: SSL VPNs and security
External Source: CONFIRM
Name: http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&DocumentOID=984744
External Source: VUPEN
Name: ADV-2009-3570
Type: Advisory
External Source: BID
Name: 37152

Technical Details

Vulnerability Type (View All)
  • Permissions, Privileges, and Access Control (CWE-264)