Mozilla Firefox up to 1.5.0.2 Javascript focus resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability has been found in Mozilla Firefox up to 1.5.0.2 and classified as critical. This impacts the function focus of the component Javascript. Performing a manipulation results in resource management. This vulnerability is reported as CVE-2006-1993. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as critical has been found in Mozilla Firefox up to 1.5.0.2 (Web Browser). This affects the function focus of the component Javascript. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. The summary by CVE is:

Mozilla Firefox 1.5.0.2, when designMode is enabled, allows remote attackers to cause a denial of service and possibly execute arbitrary code via certain Javascript that is not properly handled by the contentWindow.focus method in an iframe, which causes a reference to a deleted controller context object. NOTE: this was originally claimed to be a buffer overflow in (1) js320.dll and (2) xpcom_core.dll, but the vendor disputes this claim.

The bug was discovered 04/23/2006. The weakness was disclosed 04/25/2006 by Martijn Wargers (splices and spiffomatic64) with Securident Technologies (Website). It is possible to read the advisory at securident.com. This vulnerability is uniquely identified as CVE-2006-1993 since 04/25/2006. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

After before and not just, there has been an exploit disclosed. The exploit is shared for download at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 2 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 21348 (GLSA-200605-06 : Mozilla Firefox: Potential remote code execution), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 38544 (Mozilla Firefox iframe.contentWindow.focus Buffer Overflow Vulnerability).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at getfirefox.com. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability. Attack attempts may be identified with Snort ID 16024. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 4401.

The vulnerability is also documented in the databases at X-Force (25994), Exploit-DB (1716), Tenable (21348), SecurityFocus (BID 17671†) and OSVDB (24967†). 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: 5.9
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.9
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 21348
Nessus Name: GLSA-200605-06 : Mozilla Firefox: Potential remote code execution
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 56717
OpenVAS Name: Debian Security Advisory DSA 1053-1 (mozilla)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: getfirefox.com

Snort ID: 16024
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
PaloAlto IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

04/23/2006 🔍
04/23/2006 +0 days 🔍
04/23/2006 +0 days 🔍
04/24/2006 +1 days 🔍
04/24/2006 +0 days 🔍
04/25/2006 +1 days 🔍
04/25/2006 +0 days 🔍
04/25/2006 +0 days 🔍
04/25/2006 +0 days 🔍
05/01/2006 +5 days 🔍
05/02/2006 +1 days 🔍
05/09/2006 +7 days 🔍
05/13/2006 +4 days 🔍
05/23/2006 +10 days 🔍
06/22/2025 +6970 days 🔍

Sourcesinfo

Vendor: mozilla.org
Product: mozilla.org

Advisory: securident.com
Researcher: Martijn Wargers (splices, spiffomatic64)
Organization: Securident Technologies
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-1993 (🔍)
GCVE (CVE): GCVE-0-2006-1993
GCVE (VulDB): GCVE-100-2187

OVAL: 🔍

CERT: 🔍
X-Force: 25994 - Mozilla Firefox contentWindow.focus() designMode code execution, High Risk
SecurityFocus: 17671 - Mozilla Firefox iframe.contentWindow.focus Deleted Object Reference Vulnerability
Secunia: 20214 - HP Tru64 UNIX Firefox/Mozilla Application Suite Vulnerability, Highly Critical
OSVDB: 24967 - Mozilla Firefox iframe.contentWindow.focus() Overflow
SecurityTracker: 1015981
Vulnerability Center: 11309 - Firefox Buffer Overflow via iframe.contentWindow.focus(), Medium
Vupen: ADV-2006-1922

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

Entryinfo

Created: 05/02/2006 15:22
Updated: 06/22/2025 04:40
Changes: 05/02/2006 15:22 (116), 06/17/2019 11:18 (1), 01/20/2025 08:12 (17), 04/04/2025 06:30 (7), 06/22/2025 04:40 (2)
Complete: 🔍
Cache ID: 216:75E:103

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

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