Check point Firewall-1/VPN-1 up to 4.0 IKE Aggressive Mode missing encryption

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in Check point Firewall-1 and VPN-1 up to 4.0. Impacted is an unknown function of the component IKE Aggressive Mode. The manipulation leads to missing encryption. This vulnerability is uniquely identified as CVE-2002-1623. The attack is possible to be carried out remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Check point Firewall-1 and VPN-1 up to 4.0 (Firewall Software). It has been rated as problematic. This issue affects some unknown processing of the component IKE Aggressive Mode. The manipulation with an unknown input leads to a missing encryption vulnerability. Using CWE to declare the problem leads to CWE-311. The product does not encrypt sensitive or critical information before storage or transmission. Impacted is confidentiality. The summary by CVE is:

The design of the Internet Key Exchange (IKE) protocol, when using Aggressive Mode for shared secret authentication, does not encrypt initiator or responder identities during negotiation, which may allow remote attackers to determine valid usernames by (1) monitoring responses before the password is supplied or (2) sniffing, as originally reported for FireWall-1 SecuRemote.

The bug was discovered 09/03/2002. The weakness was disclosed 12/31/2002 as confirmed advisory (CERT.org). The advisory is shared at kb.cert.org. The identification of this vulnerability is CVE-2002-1623 since 03/26/2005. The exploitation is known to be easy. 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. MITRE ATT&CK project uses the attack technique T1600 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 119 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 62694 (Internet Key Exchange (IKE) Aggressive Mode with Pre-Shared Key), which helps to determine the existence of the flaw in a target environment. It is assigned to the family General and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38498 (Pre-shared Key Off-line Bruteforcing Using IKE Aggressive Mode).

Upgrading to version 4.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (10034), Tenable (62694), SecurityFocus (BID 5607†), OSVDB (3820†) and Vulnerability Center (SBV-19846†). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Missing encryption
CWE: CWE-311 / CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 62694
Nessus Name: Internet Key Exchange (IKE) Aggressive Mode with Pre-Shared Key
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Firewall-1/VPN-1 4.1
McAfee IPS: 🔍
McAfee IPS Version: 🔍

Timelineinfo

09/03/2002 🔍
12/31/2002 +119 days 🔍
12/31/2002 +0 days 🔍
12/31/2002 +0 days 🔍
03/26/2005 +816 days 🔍
10/23/2008 +1307 days 🔍
10/24/2012 +1462 days 🔍
08/03/2014 +648 days 🔍
09/03/2025 +4049 days 🔍

Sourcesinfo

Vendor: checkpoint.com

Advisory: kb.cert.org
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2002-1623 (🔍)
GCVE (CVE): GCVE-0-2002-1623
GCVE (VulDB): GCVE-100-19277
CERT: 🔍
X-Force: 10034 - Check Point FireWall-1/VPN-1 SecuRemote/SecureClient IKE Aggressive Mode username enumeration
SecurityFocus: 5607
OSVDB: 3820 - Check Point Firewall-1 SecuRemote IKE Username Guessing Vulnerability
Vulnerability Center: 19846 - Check Point VPN-1 and FireWall-1 IKE Usernames Disclosure Vulnerability, Medium

Entryinfo

Created: 08/03/2014 19:41
Updated: 09/03/2025 16:40
Changes: 08/03/2014 19:41 (62), 08/19/2019 21:50 (13), 11/18/2024 04:26 (16), 09/03/2025 16:40 (2)
Complete: 🔍
Cache ID: 216::103

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