VDB-14817 · CVE-1999-0685 · EDB 19486

Netscape Communicator up to 4.61 EMBED Element memory corruption

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.
6.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Netscape Communicator 4.06/4.5/4.6/4.51/4.61. It has been classified as critical. Affected by this vulnerability is an unknown functionality of the component EMBED Element Handler. Performing a manipulation results in memory corruption. This vulnerability is reported as CVE-1999-0685. Moreover, an exploit is present. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Netscape Communicator 4.06/4.5/4.6/4.51/4.61 (Web Browser). This affects an unknown code block of the component EMBED Element Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in Netscape Communicator via EMBED tags in the pluginspage option.

The weakness was disclosed 09/02/1999 by window (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-1999-0685. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed in ANSI C. The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Exploit-DB (19486) and SecurityFocus (BID 618†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/02/1999 🔍
09/02/1999 +0 days 🔍
09/02/1999 +0 days 🔍
06/21/2014 +5406 days 🔍
03/03/2025 +3908 days 🔍

Sourcesinfo

Vendor: netscape.com

Advisory: securityfocus.com⛔
Researcher: window
Status: Confirmed

CVE: CVE-1999-0685 (🔍)
GCVE (CVE): GCVE-0-1999-0685
GCVE (VulDB): GCVE-100-14817
SecurityFocus: 618 - Netscape Communicator EMBED Buffer Overflow Vulnerability

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

Entryinfo

Created: 06/21/2014 21:52
Updated: 03/03/2025 03:12
Changes: 06/21/2014 21:52 (48), 05/21/2018 10:10 (8), 03/03/2025 03:12 (19)
Complete: 🔍
Cache ID: 216::103

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