Nortel Contivity VPN Client up to 5.0 Authentication Error Message information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.4$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Nortel Contivity VPN Client up to 5.0. This affects an unknown function of the component Authentication Error Message Handler. Executing a manipulation can lead to information disclosure. This vulnerability is handled as CVE-2004-1105. The attack can be executed remotely. Additionally, an exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability has been found in Nortel Contivity VPN Client up to 5.0 (Network Encryption Software) and classified as problematic. This vulnerability affects an unknown part of the component Authentication Error Message Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

Nortel Networks Contivity VPN Client displays a different error message depending on whether the username is valid or invalid, which could allow remote attackers to gain sensitive information.

The bug was discovered 11/08/2004. The weakness was released 11/08/2004 by K. K. Mookhey with Network Intelligence India (Website). The advisory is shared for download at nii.co.in. This vulnerability was named CVE-2004-1105 since 11/30/2004. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but an exploit is available. The MITRE ATT&CK project declares the attack technique as T1592.

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 19 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version V5.01_030 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 (17988), SecurityFocus (BID 11623†), OSVDB (11533†), Secunia (SA13134†) and SecurityTracker (ID 1012130†). Additional details are provided at kb.cert.org. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 3.7
VulDB Meta Temp Score: 3.4

VulDB Base Score: 3.7
VulDB Temp Score: 3.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 🔍

Upgrade: Contivity VPN Client V5.01_030
Patch: nortelnetworks.com

Timelineinfo

10/20/2004 🔍
11/08/2004 +19 days 🔍
11/08/2004 +0 days 🔍
11/08/2004 +0 days 🔍
11/08/2004 +0 days 🔍
11/08/2004 +0 days 🔍
11/08/2004 +0 days 🔍
11/09/2004 +0 days 🔍
11/30/2004 +21 days 🔍
01/10/2005 +41 days 🔍
11/21/2024 +7255 days 🔍

Sourcesinfo

Vendor: nortel-canada.com

Advisory: nii.co.in
Researcher: K. K. Mookhey
Organization: Network Intelligence India
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-1105 (🔍)
GCVE (CVE): GCVE-0-2004-1105
GCVE (VulDB): GCVE-100-976
CERT: 🔍
X-Force: 17988 - Nortel Contivity VPN Client information disclosure, Medium Risk
SecurityFocus: 11623 - Nortel Contivity VPN Client Username Enumeration Vulnerability
Secunia: 13134 - Nortel Contivity VPN Client Account Enumeration Weakness, Not Critical
OSVDB: 11533 - Nortel Contivity VPN Client Account Enumeration
SecurityTracker: 1012130

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 11/09/2004 14:13
Updated: 11/21/2024 05:40
Changes: 11/09/2004 14:13 (83), 06/30/2019 09:21 (2), 11/21/2024 05:40 (16)
Complete: 🔍
Cache ID: 216::103

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