Netscape Messaging Server up to 4.15p2 POP3 Server User information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Netscape Messaging Server up to 4.15p2. Affected by this issue is some unknown functionality of the component POP3 Server. This manipulation causes information disclosure (User). This vulnerability is handled as CVE-2000-0960. There is not any exploit available. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability was found in Netscape Messaging Server up to 4.15p2. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the component POP3 Server. The manipulation with an unknown input leads to a information disclosure vulnerability (User). 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. The summary by CVE is:

The POP3 server in Netscape Messaging Server 4.15p1 generates different error messages for incorrect user names versus incorrect passwords, which allows remote attackers to determine valid users on the system and harvest email addresses for spam abuse.

The weakness was released 12/19/2000 as not defined posting (Bugtraq). It is possible to read the advisory at marc.theaimsgroup.com. This vulnerability is known as CVE-2000-0960. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 10681 (Netscape Messenging Server POP3 Error Message User Account Enumeration), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 5003 (iPlanet Netscape Messaging Server IMAP E-mail Address Verification Vulnerability).

Proper firewalling of is able to address this issue.

The vulnerability is also documented in the databases at X-Force (5364), Tenable (10681), SecurityFocus (BID 1787†) and Vulnerability Center (SBV-280†). Entry connected to this vulnerability is available at VDB-16172. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
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

Name: User
Class: Information disclosure / User
CWE: CWE-200 / CWE-284 / CWE-266
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: 10681
Nessus Name: Netscape Messenging Server POP3 Error Message User Account Enumeration
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

10/11/2000 🔍
12/19/2000 +69 days 🔍
12/19/2000 +0 days 🔍
12/19/2000 +0 days 🔍
05/29/2001 +161 days 🔍
12/04/2002 +554 days 🔍
07/01/2014 +4227 days 🔍
10/12/2025 +4120 days 🔍

Sourcesinfo

Vendor: netscape.com

Advisory: marc.theaimsgroup.com
Status: Not defined

CVE: CVE-2000-0960 (🔍)
GCVE (CVE): GCVE-0-2000-0960
GCVE (VulDB): GCVE-100-16171
X-Force: 5364 - Netscape Messaging email verification email harvesting
SecurityFocus: 1787 - Netscape Messaging Server Email Address Verification Vulnerability
Vulnerability Center: 280 - Netscape Messaging Server 4.15p1 POP3 Information leakage, Medium

See also: 🔍

Entryinfo

Created: 07/02/2014 00:39
Updated: 10/12/2025 01:24
Changes: 07/02/2014 00:39 (70), 10/12/2025 01:24 (18)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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