Microsoft Internet Explorer 6.0 ActiveX Object cenroll.cenroll.2 stringtobinary second denial of service

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Internet Explorer 6.0. This vulnerability affects the function stringtobinary of the file cenroll.cenroll.2 of the component ActiveX Object. The manipulation of the argument second leads to denial of service. This vulnerability is traded as CVE-2006-3899. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Microsoft Internet Explorer 6.0 (Web Browser). This issue affects the function stringtobinary of the file cenroll.cenroll.2 of the component ActiveX Object. The manipulation of the argument second with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. The summary by CVE is:

Microsoft Internet Explorer 6.0 on Windows XP SP2 allows remote attackers to cause a denial of service (application crash) by calling the stringToBinary function of the CEnroll.CEnroll.2 ActiveX object with a long second argument, which triggers an invalid memory access inside the SysAllocStringLen function.

The issue has been introduced in 08/27/2001. The weakness was shared 07/20/2006 (Website). The advisory is shared at securityfocus.com. The identification of this vulnerability is CVE-2006-3899 since 07/26/2006. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. MITRE ATT&CK project uses the attack technique T1499 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 1788 days. During that time the estimated underground price was around $5k-$25k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (27884), SecurityFocus (BID 19102†) and OSVDB (27230†). The entries VDB-31528 and VDB-31527 are related to this item. 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: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

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Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
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: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

08/27/2001 🔍
07/20/2006 +1788 days 🔍
07/20/2006 +0 days 🔍
07/21/2006 +0 days 🔍
07/21/2006 +0 days 🔍
07/26/2006 +5 days 🔍
07/27/2006 +1 days 🔍
03/12/2015 +3150 days 🔍
04/07/2017 +757 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2006-3899 (🔍)
GCVE (CVE): GCVE-0-2006-3899
GCVE (VulDB): GCVE-100-31529
X-Force: 27884 - Microsoft Internet Explorer CEnroll ActiveX object denial of service
SecurityFocus: 19102 - Microsoft Internet Explorer String To Binary Function Denial Of Service Vulnerability
OSVDB: 27230 - Microsoft IE CEnroll SysAllocStringLen Invalid Length
Vupen: ADV-2006-2916

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

Entryinfo

Created: 03/12/2015 14:25
Updated: 04/07/2017 12:08
Changes: 03/12/2015 14:25 (62), 04/07/2017 12:08 (6)
Complete: 🔍
Cache ID: 216::103

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

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