Microsoft Internet Explorer 5/6 IST information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in Microsoft Internet Explorer 5/6 and classified as critical. This affects an unknown function of the component IST Handler. Performing a manipulation results in information disclosure. This vulnerability is identified as CVE-2004-0380. The attack can be initiated remotely. Additionally, an exploit exists. Disabling the affected component is recommended.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 5/6 (Web Browser). It has been classified as critical. This affects an unknown part of the component IST Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality.

The issue has been introduced in 06/02/1998. The weakness was released 04/08/2004 by Thor Larholm with US-CERT (Website). It is possible to read the advisory at kb.cert.org. This vulnerability is uniquely identified as CVE-2004-0380 since 04/05/2004. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but a public exploit is available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

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 2137 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 12208 (MS04-013: Cumulative Update for Outlook Express (837009)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Windows : Microsoft Bulletins. The commercial vulnerability scanner Qualys is able to test this issue with plugin 90110 (Microsoft Outlook Express Cumulative Security Update Not Installed (MS04-013)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at windowsupdate.microsoft.com.

The vulnerability is also documented in the databases at X-Force (15705), Exploit-DB (23695), Tenable (12208), SecurityFocus (BID 9658†) and Secunia (SA10523†). Further details are available at msdn.microsoft.com. Entries connected to this vulnerability are available at VDB-411, VDB-462, VDB-595 and VDB-81833. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 3.9

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
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: 12208
Nessus Name: MS04-013: Cumulative Update for Outlook Express (837009)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Disable
Status: 🔍

0-Day Time: 🔍

Patch: windowsupdate.microsoft.com

Timelineinfo

06/02/1998 🔍
01/02/2004 +2040 days 🔍
02/13/2004 +42 days 🔍
04/05/2004 +52 days 🔍
04/08/2004 +3 days 🔍
04/13/2004 +5 days 🔍
04/13/2004 +0 days 🔍
05/04/2004 +21 days 🔍
09/15/2025 +7804 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: kb.cert.org
Researcher: Thor Larholm
Organization: US-CERT
Status: Confirmed

CVE: CVE-2004-0380 (🔍)
GCVE (CVE): GCVE-0-2004-0380
GCVE (VulDB): GCVE-100-591

OVAL: 🔍

CERT: 🔍
X-Force: 15705 - Microsoft Outlook Express MHTML URL allows execution of code, High Risk
SecurityFocus: 9658 - Microsoft Internet Explorer ITS Protocol Zone Bypass Vulnerability
Secunia: 10523 - Internet Explorer showHelp() Restriction Bypass Vulnerability, Highly Critical
Vulnerability Center: 4110

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍
See also: 🔍

Entryinfo

Created: 04/13/2004 12:18
Updated: 09/15/2025 23:59
Changes: 04/13/2004 12:18 (70), 04/07/2017 12:00 (5), 03/09/2021 13:01 (2), 03/09/2021 13:03 (7), 03/09/2021 13:10 (1), 06/26/2024 18:41 (15), 01/02/2025 15:05 (7), 07/12/2025 23:16 (3), 09/15/2025 23:59 (11)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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