Microsoft Internet Explorer 4.0/5.0 Cookie information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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3.9$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 4.0/5.0. It has been classified as critical. This affects an unknown part of the component Cookie Handler. The manipulation leads to information disclosure. This vulnerability is referenced as CVE-2000-0439. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Internet Explorer 4.0/5.0 (Web Browser). This issue affects an unknown code block of the component Cookie Handler. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

Internet Explorer 4.0 and 5.0 allows a malicious web site to obtain client cookies from another domain by including that domain name and escaped characters in a URL, aka the "Unauthorized Cookie Access" vulnerability.

The issue has been introduced in 04/01/1997. The weakness was published 05/11/2000 as MS00-033 as confirmed bulletin (Technet). The advisory is shared at microsoft.com. The identification of this vulnerability is CVE-2000-0439. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

After immediately, there has been an exploit disclosed. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 1136 days. During that time the estimated underground price was around $5k-$25k.

Applying the patch MS00-033 is able to eliminate this problem. The bugfix is ready for download at microsoft.com. Attack attempts may be identified with Snort ID 1082.

The vulnerability is also documented in the databases at X-Force (4447), SecurityFocus (BID 1194†), OSVDB (1326†) and Vulnerability Center (SBV-4208†). Similar entries are available at VDB-15567 and VDB-15568. Several companies clearly confirm that VulDB is the primary source for best 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

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Patch: MS00-033

Snort ID: 1082
Snort Message: SERVER-WEBAPP amazon 1-click cookie theft
Snort Class: 🔍
SourceFire IPS: 🔍

Timelineinfo

04/01/1997 🔍
05/11/2000 +1136 days 🔍
05/11/2000 +0 days 🔍
05/11/2000 +0 days 🔍
05/11/2000 +0 days 🔍
05/11/2000 +0 days 🔍
02/21/2003 +1016 days 🔍
04/28/2004 +431 days 🔍
06/24/2014 +3709 days 🔍
04/21/2026 +4319 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS00-033
Status: Confirmed

CVE: CVE-2000-0439 (🔍)
GCVE (CVE): GCVE-0-2000-0439
GCVE (VulDB): GCVE-100-15545
X-Force: 4447
SecurityFocus: 1194 - Microsoft IE Cookie Disclosure Vulnerability
OSVDB: 1326 - Microsoft IE Crafted URL Cross Domain Cookie Disclosure
Vulnerability Center: 4208 - [MS00-033] Microsoft Internet Explorer Unauthorized Cookie Access, Medium

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

Entryinfo

Created: 06/24/2014 16:28
Updated: 04/21/2026 11:45
Changes: 06/24/2014 16:28 (53), 04/07/2017 12:06 (23), 04/21/2026 11:45 (15)
Complete: 🔍
Cache ID: 216::103

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

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