Microsoft Internet Explorer 6 HTML Engine Unicode memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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5.9$0-$5k0.00

Summaryinfo

A vulnerability labeled as critical has been found in Microsoft Internet Explorer 6. This affects an unknown function of the component HTML Engine. Executing a manipulation as part of Unicode can lead to memory corruption. This vulnerability is tracked as CVE-2003-1478. The attack can be launched remotely. Moreover, an exploit is present. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 6 (Web Browser). It has been declared as critical. This vulnerability affects an unknown part of the component HTML Engine. The manipulation as part of a Unicode leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect availability. CVE summarizes:

Konqueror in KDE 3.0.3 allows remote attackers to cause a denial of service (core dump) via a web page that begins with a "xFFxFE" byte sequence and a large number of CRLF sequences, as demonstrated using freeze.htm.

The issue has been introduced in 03/22/2001. The weakness was disclosed 04/29/2003 by ERRor and dHtm as not defined posting (Bugtraq). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2003-1478 since 10/24/2007. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are unknown but a public exploit is available.

It is possible to download the exploit 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 768 days. During that time the estimated underground price was around $25k-$100k.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at securityfocus.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (11971), Exploit-DB (22560), SecurityFocus (BID 7486†) and OSVDB (60402†). The entry VDB-48 is pretty similar. Once again VulDB remains the best 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: 6.5
VulDB Meta Temp Score: 5.9

VulDB Base Score: 6.5
VulDB Temp Score: 5.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: securityfocus.com

Timelineinfo

03/22/2001 🔍
04/29/2003 +768 days 🔍
04/29/2003 +0 days 🔍
05/02/2003 +2 days 🔍
12/31/2003 +243 days 🔍
10/24/2007 +1393 days 🔍
11/20/2009 +758 days 🔍
10/07/2024 +5434 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Researcher: Discovery (ERRor, dHtm)
Status: Not defined

CVE: CVE-2003-1478 (🔍)
GCVE (CVE): GCVE-0-2003-1478
GCVE (VulDB): GCVE-100-52
X-Force: 11971 - K Desktop Environment (KDE) Konqueror denial of service, Medium Risk
SecurityFocus: 7486 - KDE Konqueror Malformed HTML Page Denial of Service Vulnerability
OSVDB: 60402 - KDE Konqueror Crafted Byte Sequence / CRLF Handling Remote DoS

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

Entryinfo

Created: 04/29/2003 02:00
Updated: 10/07/2024 09:44
Changes: 04/29/2003 02:00 (57), 05/07/2019 12:37 (16), 03/08/2021 09:18 (5), 10/07/2024 09:44 (23)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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