Cisco VPN 3000 Concentrator up to 4.7.2.B HTTP denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in Cisco VPN 3000 Concentrator up to 4.7.2.B. This issue affects some unknown processing of the component HTTP Handler. This manipulation causes denial of service. This vulnerability is tracked as CVE-2006-0483. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Cisco VPN 3000 Concentrator up to 4.7.2.B (Network Encryption Software). Affected by this vulnerability is an unknown functionality of the component HTTP Handler. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability. The summary by CVE is:

Cisco VPN 3000 series concentrators running software 4.7.0 through 4.7.2.A allow remote attackers to cause a denial of service (device reload or user disconnect) via a crafted HTTP packet.

The bug was discovered 01/26/2006. The weakness was disclosed 01/27/2006 by Eldon Sprickerhoff with Schmoocon security conference (Website). The advisory is shared at cisco.com. This vulnerability is known as CVE-2006-0483 since 01/31/2006. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 43077 (Cisco VPN 3000 Concentrator Denial of Service Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at cisco.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (24330), SecurityFocus (BID 16394†), OSVDB (22754†), Secunia (SA18629†) and SecurityTracker (ID 1015546†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.5
VulDB Temp Score: 6.7
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: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

01/26/2006 🔍
01/26/2006 +0 days 🔍
01/26/2006 +0 days 🔍
01/26/2006 +0 days 🔍
01/27/2006 +1 days 🔍
01/27/2006 +0 days 🔍
01/31/2006 +3 days 🔍
01/31/2006 +0 days 🔍
01/31/2006 +0 days 🔍
02/06/2006 +6 days 🔍
06/23/2025 +7077 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Eldon Sprickerhoff
Organization: Schmoocon security conference
Status: Confirmed

CVE: CVE-2006-0483 (🔍)
GCVE (CVE): GCVE-0-2006-0483
GCVE (VulDB): GCVE-100-2017
X-Force: 24330 - Cisco VPN 3000 Concentrator HTTP packet denial of service, Medium Risk
SecurityFocus: 16394 - Cisco VPN 3000 Concentrator Malformed HTTP/TCP Packet Remote Denial of Service Vulnerability
Secunia: 18629 - Cisco VPN 3000 Concentrator HTTP Packet Denial of Service, Moderately Critical
OSVDB: 22754 - Cisco VPN 3000 Concentrator Crafted HTTP Packet DoS
SecurityTracker: 1015546
Vulnerability Center: 10235 - [cisco-sa-20060126-vpn] Cisco VPN 3000 DoS via HTTP Packets, High
Vupen: ADV-2006-0346

Entryinfo

Created: 02/06/2006 10:24
Updated: 06/23/2025 02:06
Changes: 02/06/2006 10:24 (84), 06/13/2019 16:59 (1), 06/23/2025 02:06 (18)
Complete: 🔍
Cache ID: 216:AA3:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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