Apple Safari 6.0.3 HTML5 Engine localStorage 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.
5.3	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Apple Safari 6.0.3. It has been classified as problematic. The impacted element is the function localStorage of the component HTML5 Engine. Performing a manipulation results in denial of service. In addition, an exploit is available.

Detailsinfo

A vulnerability classified as problematic has been found in Apple Safari 6.0.3 (Web Browser). This affects the function localStorage of the component HTML5 Engine. The manipulation with an unknown input leads to a denial of service vulnerability. CWE is classifying the issue as CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. This is going to have an impact on availability.

The weakness was presented 02/27/2013 by Feross Aboukhadijeh as Introducing the new HTML5 Hard Disk Filler™ API as not defined exploit (Website). The advisory is shared at feross.org. The public release happened without involvement of Apple. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known.

A public exploit has been developed by Feross Aboukhadijeh in HTML5 and been published immediately after the advisory. The exploit is shared for download at filldisk.com. It is declared as highly functional. We expect the 0-day to have been worth approximately $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 vulnerability database at OSVDB (92285†). Further details are available at bbc.co.uk. See VDB-8431, VDB-8432 and VDB-8434 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Web Browser

Vendor

Apple

Name

Safari

Version

6.0.3

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

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CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

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

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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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: Highly functional
Author: Feross Aboukhadijeh
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

02/27/2013 🔍
02/27/2013 +0 days 🔍
04/18/2013 +50 days 🔍
04/17/2018 +1825 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: Introducing the new HTML5 Hard Disk Filler™ API
Researcher: Feross Aboukhadijeh
Status: Not defined

GCVE (VulDB): GCVE-100-8433
OSVDB: 92285

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

Entryinfo

Created: 04/18/2013 10:49
Updated: 04/17/2018 10:30
Changes: 04/18/2013 10:49 (53), 04/17/2018 10:30 (2)
Complete: 🔍
Cache ID: 216:ED8:103

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