VDB-15594 · CVE-2000-0517 · XFDB 4550

Netscape Communicator up to 4.73 SSL Certificate authentication spoofing

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in Netscape Communicator up to 4.73. The impacted element is an unknown function of the component SSL Certificate Handler. The manipulation results in authentication spoofing. This vulnerability is cataloged as CVE-2000-0517. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Netscape Communicator up to 4.73 (Web Browser). It has been classified as critical. Affected is an unknown code block of the component SSL Certificate Handler. The manipulation with an unknown input leads to a authentication spoofing vulnerability. CWE is classifying the issue as CWE-290. This attack-focused weakness is caused by incorrectly implemented authentication schemes that are subject to spoofing attacks. This is going to have an impact on confidentiality. CVE summarizes:

Netscape 4.73 and earlier does not properly warn users about a potentially invalid certificate if the user has previously accepted the certificate for a different web site, which could allow remote attackers to spoof a legitimate web site by compromising that site s DNS information.

The weakness was shared 05/26/2000 with Massachusetts Institute of Technology as confirmed advisory (CERT.org). The advisory is available at cert.org. This vulnerability is traded as CVE-2000-0517. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at X-Force (4550) and SecurityFocus (BID 1260†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Web Browser

Vendor

Netscape

Name

Communicator

Version

License

free

Website

Vendor: https://www.netscape.com/

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

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Authentication spoofing
CWE: CWE-290 / CWE-287
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

05/25/2000 🔍
05/26/2000 +1 days 🔍
05/26/2000 +0 days 🔍
06/24/2014 +5142 days 🔍
05/24/2018 +1430 days 🔍

Sourcesinfo

Vendor: netscape.com

Advisory: cert.org
Organization: Massachusetts Institute of Technology
Status: Confirmed

CVE: CVE-2000-0517 (🔍)
GCVE (CVE): GCVE-0-2000-0517
GCVE (VulDB): GCVE-100-15594
X-Force: 4550 - Netscape Navigator could allow an attacker to masquerade as a legitimate Web site
SecurityFocus: 1260 - Netscape Communicator Inconsistent SSL Certificate Warning Vulnerability

Entryinfo

Created: 06/24/2014 18:09
Updated: 05/24/2018 21:36
Changes: 06/24/2014 18:09 (52), 05/24/2018 21:36 (4)
Complete: 🔍
Cache ID: 216:737:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.