Nortel Contivity VPN Client up to 5.1 Authentication improper authentication

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Nortel Contivity VPN Client up to 5.1. It has been classified as problematic. Impacted is an unknown function of the component Authentication. The manipulation leads to improper authentication. This vulnerability is traded as CVE-2004-2621. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Nortel Contivity VPN Client up to 5.1 (Network Encryption Software). This issue affects an unknown code block of the component Authentication. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, and integrity. The summary by CVE is:

Nortel Contivity VPN Client 2.1.7, 3.00, 3.01, 4.91, and 5.01, when opening a VPN tunnel, does not check the gateway certificate until after a dialog box has been displayed to the user, which creates a race condition that allows remote attackers to perform a man-in-the-middle (MITM) attack.

The weakness was shared 10/20/2004 by Roger Sylvain with Solucom (Website). The advisory is shared at secunia.com. The identification of this vulnerability is CVE-2004-2621 since 12/04/2005. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at nortelnetworks.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 (17812), SecurityFocus (BID 11495†), OSVDB (11002†), Secunia (SA12881†) and SecurityTracker (ID 1011846†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 8.2
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: nortelnetworks.com

Timelineinfo

10/20/2004 🔍
10/20/2004 +0 days 🔍
10/21/2004 +0 days 🔍
10/21/2004 +0 days 🔍
10/21/2004 +0 days 🔍
12/31/2004 +71 days 🔍
12/04/2005 +338 days 🔍
06/07/2017 +4203 days 🔍

Sourcesinfo

Vendor: nortel-canada.com

Advisory: secunia.com⛔
Researcher: Roger Sylvain
Organization: Solucom
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-2621 (🔍)
GCVE (CVE): GCVE-0-2004-2621
GCVE (VulDB): GCVE-100-929
X-Force: 17812 - Nortel Contivity VPN Client unauthorized access to VPN tunnel, High Risk
SecurityFocus: 11495 - Nortel Contivity VPN Client Gateway Certificate Check Failure Vulnerability
Secunia: 12881 - Nortel Contivity VPN Client Open Tunnel Certificate Verification Issue, Less Critical
OSVDB: 11002 - Nortel Contivity VPN Client Open Tunnel Persistence
SecurityTracker: 1011846 - Nortel Contivity VPN Client May Let Remote Users Hijack Sessions

Entryinfo

Created: 10/21/2004 15:37
Updated: 06/07/2017 16:02
Changes: 10/21/2004 15:37 (74), 06/07/2017 16:02 (4)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!