Apple iOS up to 6.1.4 File System AppleDouble File input validation

CVSS Meta Temp Score
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CTI Interest Score
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9.5$5k-$25k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Apple iOS up to 6.1.4. This affects an unknown part of the component File System Handler. The manipulation as part of AppleDouble File results in input validation. This vulnerability is known as CVE-2013-3955. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 6.1.4 (Smartphone Operating System). It has been classified as very critical. Affected is some unknown functionality of the component File System Handler. The manipulation as part of a AppleDouble File leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The get_xattrinfo function in the XNU kernel in Apple iOS 5.x and 6.x through 6.1.3 on iPad devices does not properly validate the header of an AppleDouble file, which might allow local users to cause a denial of service (memory corruption) or have unspecified other impact via an invalid file on an msdosfs filesystem.

The weakness was published 09/18/2013 by Stefan Esser as APPLE-SA-2013-09-18-2 iOS 7 as confirmed mailinglist post (Website). The advisory is shared for download at prod.lists.apple.com. This vulnerability is traded as CVE-2013-3955 since 06/05/2013. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 05/25/2021). It is expected to see the exploit prices for this product increasing in the near future.

The vulnerability scanner Nessus provides a plugin with the ID 69984 (Apple iOS < 7 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mobile Devices.

Upgrading to version iOS 7.0 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (84813), Tenable (69984), SecurityFocus (BID 60443†) and Vulnerability Center (SBV-42742†). Further details are available at zdnet.com. Similar entries are available at VDB-9014, VDB-9017, VDB-9018 and VDB-9019. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 69984
Nessus Name: Apple iOS < 7 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: iOS iOS 7.0

Timelineinfo

04/26/2013 🔍
04/26/2013 +0 days 🔍
06/05/2013 +40 days 🔍
06/05/2013 +0 days 🔍
09/18/2013 +105 days 🔍
09/18/2013 +0 days 🔍
09/20/2013 +1 days 🔍
12/31/2013 +102 days 🔍
05/25/2021 +2702 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-09-18-2 iOS 7
Researcher: Stefan Esser
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-3955 (🔍)
GCVE (CVE): GCVE-0-2013-3955
GCVE (VulDB): GCVE-100-10320
X-Force: 84813
SecurityFocus: 60443
SecurityTracker: 1029054
Vulnerability Center: 42742 - Apple iOS 5, 6 Local DoS Vulnerability in XNU Kernel via Invalid File on msdosfs Filesystem, Medium

scip Labs: https://www.scip.ch/en/?labs.20150917
Misc.: 🔍
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Entryinfo

Created: 09/20/2013 10:34
Updated: 05/25/2021 08:40
Changes: 09/20/2013 10:34 (51), 05/18/2017 17:37 (20), 05/25/2021 08:35 (3), 05/25/2021 08:39 (2), 05/25/2021 08:40 (2)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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