VDB-13450 · EDB 33587 · OSVDB 107643

Microsoft Internet Explorer 11 WeakMap integer coercion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Microsoft Internet Explorer 11. This affects an unknown function of the component WeakMap Handler. Executing a manipulation can lead to integer coercion. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability has been found in Microsoft Internet Explorer 11 (Web Browser) and classified as problematic. This vulnerability affects an unknown part of the component WeakMap Handler. The manipulation with an unknown input leads to a integer coercion vulnerability. The CWE definition for the vulnerability is CWE-192. Integer coercion refers to a set of flaws pertaining to the type casting, extension, or truncation of primitive data types. As an impact it is known to affect availability.

The issue has been introduced in 06/26/2013. The weakness was published 05/30/2014 by Pawel Wylecial (h0wlu) with http://h0wl.pl as Microsoft Internet Explorer 11 - WeakMap Integer Divide-by-Zero as confirmed exploit (Exploit-DB). The advisory is available at exploit-db.com. The vendor was not involved in the coordination of the public release. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Pawel Wylecial (h0wlu) 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 proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 338 days. During that time the estimated underground price was around $5k-$25k. The code used by the exploit is:

<html>
<script>
var a = [new WeakMap];
a.push(new WeakMap);
a[1].set(a[0], a[1]);
a[0].delete(a[0]);
</script>
</html>

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 Exploit-DB (33587) and OSVDB (107643†). If you want to get best quality of vulnerability data, you may have to visit VulDB.

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: 5.0

VulDB Base Score: 5.3
VulDB Temp Score: 5.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer coercion
CWE: CWE-192 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Pawel Wylecial (h0wlu)
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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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 🔍
05/30/2014 +338 days 🔍
05/30/2014 +0 days 🔍
05/30/2014 +0 days 🔍
06/05/2014 +6 days 🔍
04/07/2017 +1037 days 🔍

Sourcesinfo

Vendor: microsoft.com

Advisory: Microsoft Internet Explorer 11 - WeakMap Integer Divide-by-Zero
Researcher: Pawel Wylecial (h0wlu)
Organization: http://h0wl.pl
Status: Confirmed

GCVE (VulDB): GCVE-100-13450
OSVDB: 107643

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

Entryinfo

Created: 06/05/2014 14:42
Updated: 04/07/2017 12:05
Changes: 06/05/2014 14:42 (56), 04/07/2017 12:05 (3)
Complete: 🔍
Cache ID: 216:573:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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