Cisco WebVPN connecterror.html cross site scripting

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.0$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Cisco WebVPN. This impacts an unknown function of the file connecterror.html. Performing a manipulation results in cross site scripting. This vulnerability is cataloged as CVE-2006-3073. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to disable the affected component.

Detailsinfo

A vulnerability was found in Cisco WebVPN (affected version not known). It has been classified as critical. This affects some unknown functionality of the file connecterror.html. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-80. The product receives input from an upstream component, but it does not neutralize or incorrectly neutralizes special characters such as "<", ">", and "&" that could be interpreted as web-scripting elements when they are sent to a downstream component that processes web pages. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Multiple cross-site scripting (XSS) vulnerabilities in the WebVPN feature in the Cisco VPN 3000 Series Concentrators and Cisco ASA 5500 Series Adaptive Security Appliances (ASA), when in WebVPN clientless mode, allow remote attackers to inject arbitrary web script or HTML via the domain parameter in (1) dnserror.html and (2) connecterror.html, aka bugid CSCsd81095 (VPN3k) and CSCse48193 (ASA). NOTE: the vendor states that "WebVPN full-network-access mode" is not affected, despite the claims by the original researcher.

The bug was discovered 06/13/2006. The weakness was shared 06/14/2006 by Michal Zalewski (Website). It is possible to read the advisory at lists.grok.org.uk. This vulnerability is uniquely identified as CVE-2006-3073 since 06/19/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

After even before and not, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $5k-$25k. By approaching the search of inurl:connecterror.html it is possible to find vulnerable targets with Google Hacking.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com.

The vulnerability is also documented in the databases at X-Force (27086), SecurityFocus (BID 18419†), OSVDB (26453†), Secunia (SA20644†) and SecurityTracker (ID 1016252†). The entry VDB-2318 is related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.0

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-80 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

06/08/2006 🔍
06/09/2006 +1 days 🔍
06/13/2006 +4 days 🔍
06/13/2006 +0 days 🔍
06/14/2006 +1 days 🔍
06/14/2006 +0 days 🔍
06/14/2006 +0 days 🔍
06/14/2006 +0 days 🔍
06/19/2006 +4 days 🔍
06/19/2006 +0 days 🔍
06/19/2006 +0 days 🔍
06/26/2006 +7 days 🔍
06/20/2019 +4742 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: lists.grok.org.uk
Researcher: Michal Zalewski
Status: Confirmed

CVE: CVE-2006-3073 (🔍)
GCVE (CVE): GCVE-0-2006-3073
GCVE (VulDB): GCVE-100-2319
X-Force: 27086
SecurityFocus: 18419 - Cisco VPN3K/ASA WebVPN Clientless Mode Cross-Site Scripting Vulnerability
Secunia: 20644 - Cisco WebVPN Cross-Site Scripting Vulnerability, Less Critical
OSVDB: 26453 - Cisco WebVPN Clientless Mode dnserror.html domain Parameter XSS
SecurityTracker: 1016252
Vulnerability Center: 11946 - [cisco-sr-20060613-webvpn-xss] WebVPN Clientless Mode XSS via Error Messages, Medium
Vupen: ADV-2006-2331

See also: 🔍

Entryinfo

Created: 06/26/2006 12:55
Updated: 06/20/2019 18:45
Changes: 06/26/2006 12:55 (82), 06/20/2019 18:45 (1)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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