Microsoft Internet Explorer 5.01/5.5/6.0 Legacy ActiveX Control 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.
5.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Microsoft Internet Explorer 5.01/5.5/6.0. It has been rated as critical. Affected by this issue is some unknown functionality of the component Legacy ActiveX Control. The manipulation leads to memory corruption. This vulnerability is uniquely identified as CVE-2002-0647. The attack is possible to be carried out remotely. Moreover, an exploit is present. It is recommended to apply a patch to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Microsoft Internet Explorer 5.01/5.5/6.0 (Web Browser). This issue affects an unknown function of the component Legacy ActiveX Control. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Buffer overflow in a legacy ActiveX control used to display specially formatted text in Microsoft Internet Explorer 5.01, 5.5, and 6.0 allows remote attackers to execute arbitrary code, aka "Buffer Overrun in Legacy Text Formatting ActiveX Control".

The issue has been introduced in 11/08/1999. The weakness was disclosed 09/24/2002 by Mark Litchfield with Next Generation Security Software as MS02-047 as confirmed bulletin (Technet). It is possible to read the advisory at microsoft.com. The identification of this vulnerability is CVE-2002-0647. 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 a public exploit is available.

The exploit is available 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 1051 days. During that time the estimated underground price was around $25k-$100k.

Applying the patch MS02-047 is able to eliminate this problem. The bugfix is ready for download at microsoft.com.

The vulnerability is also documented in the databases at X-Force (9935), Exploit-DB (21748), SecurityFocus (BID 5558†) and Vulnerability Center (SBV-3075†). The entries VDB-18768, VDB-18769, VDB-18770 and VDB-18771 are pretty similar. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Support

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 5.7

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: MS02-047
SourceFire IPS: 🔍

Timelineinfo

11/08/1999 🔍
08/22/2002 +1018 days 🔍
08/22/2002 +0 days 🔍
09/24/2002 +33 days 🔍
09/24/2002 +0 days 🔍
12/02/2003 +434 days 🔍
07/23/2014 +3886 days 🔍
06/22/2025 +3987 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: MS02-047
Researcher: Mark Litchfield
Organization: Next Generation Security Software
Status: Confirmed

CVE: CVE-2002-0647 (🔍)
GCVE (CVE): GCVE-0-2002-0647
GCVE (VulDB): GCVE-100-18767
X-Force: 9935
SecurityFocus: 5558
Vulnerability Center: 3075 - [MS02-047] Buffer Overflow in Legacy ActiveX Control, Medium

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

Entryinfo

Created: 07/23/2014 10:55
Updated: 06/22/2025 19:35
Changes: 07/23/2014 10:55 (64), 04/07/2017 12:07 (4), 06/22/2025 19:35 (24)
Complete: 🔍
Cache ID: 216:7B8:103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you know our Splunk app?

Download it now for free!