Cisco Intrusion Detection System up to 4.1(5c) SSLv2 HELLO 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 marked as critical has been reported in Cisco Intrusion Detection System up to 4.1(5c). The impacted element is an unknown function of the component SSLv2 Handler. Performing a manipulation of the argument HELLO results in denial of service. This vulnerability is cataloged as CVE-2006-4910. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Cisco Intrusion Detection System up to 4.1(5c). This affects an unknown code of the component SSLv2 Handler. The manipulation of the argument HELLO with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability. The summary by CVE is:

The web administration interface (mainApp) to Cisco IDS before 4.1(5c), and IPS 5.0 before 5.0(6p1) and 5.1 before 5.1(2) allows remote attackers to cause a denial of service (unresponsive device) via a crafted SSLv2 Client Hello packet.

The bug was discovered 09/20/2006. The weakness was shared 09/21/2006 by Charles McAuley with Cisco (Website). It is possible to read the advisory at cisco.com. This vulnerability is uniquely identified as CVE-2006-4910 since 09/20/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept.

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 (29056), SecurityFocus (BID 20124†), OSVDB (29037†), Secunia (SA22046†) and SecurityTracker (ID 1016891†). The entries VDB-2560 and VDB-2558 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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Website

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

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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: cisco.com

Timelineinfo

09/20/2006 🔍
09/20/2006 +0 days 🔍
09/20/2006 +0 days 🔍
09/20/2006 +0 days 🔍
09/20/2006 +0 days 🔍
09/20/2006 +0 days 🔍
09/21/2006 +1 days 🔍
09/21/2006 +0 days 🔍
09/21/2006 +0 days 🔍
09/22/2006 +0 days 🔍
09/28/2006 +6 days 🔍
01/25/2025 +6694 days 🔍

Sourcesinfo

Vendor: cisco.com

Advisory: cisco.com
Researcher: Charles McAuley
Organization: Cisco
Status: Confirmed

CVE: CVE-2006-4910 (🔍)
GCVE (CVE): GCVE-0-2006-4910
GCVE (VulDB): GCVE-100-2559
CERT: 🔍
X-Force: 29056
SecurityFocus: 20124 - Cisco IPS/IDS Web Administration Interface Denial Of Service Vulnerability
Secunia: 22046 - Cisco Intrusion Detection / Prevention System "SSL Hello" Denial of Service, Less Critical
OSVDB: 29037 - Cisco IPS/IDS Web Administration Malformed SSLv2 Client Hello DoS
SecurityTracker: 1016891
Vulnerability Center: 12795 - [cisco-sa-20060920-ips] Cisco IDS and IPS MainApp Remote DoS Via a Crafted SSLv2 Packet, High
Vupen: ADV-2006-3721

See also: 🔍

Entryinfo

Created: 09/22/2006 14:16
Updated: 01/25/2025 16:42
Changes: 09/22/2006 14:16 (76), 07/08/2019 20:40 (8), 01/25/2025 16:42 (17)
Complete: 🔍
Cache ID: 216::103

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

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