Apple iOS up to 6.1.4 posix_spawn API 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 classified as critical has been found in Apple iOS up to 6.1.4. This affects an unknown part of the component posix_spawn API. The manipulation leads to input validation. This vulnerability is documented as CVE-2013-3954. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Apple iOS up to 6.1.4 (Smartphone Operating System). It has been rated as very critical. This issue affects some unknown processing of the component posix_spawn API. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

The posix_spawn system call in the XNU kernel in Apple Mac OS X 10.8.x does not properly validate the data for file actions and port actions, which allows local users to (1) cause a denial of service (panic) via a size value that is inconsistent with a header count field, or (2) obtain sensitive information from kernel heap memory via a certain size value in conjunction with a crafted buffer.

The weakness was released 09/18/2013 by Stefan Esser as APPLE-SA-2013-09-18-2 iOS 7 as confirmed mailinglist post (Website). It is possible to read the advisory at prod.lists.apple.com. The identification of this vulnerability is CVE-2013-3954 since 06/05/2013. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (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 70257 (Apple TV < 6.0 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Misc. and running in the context r.

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 Tenable (70257), SecurityFocus (BID 52107†) and Secunia (SA54886†). zdnet.com is providing further details. Entries connected to this vulnerability are available at VDB-4661, VDB-5610, VDB-8303 and VDB-8559. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

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: 70257
Nessus Name: Apple TV < 6.0 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802026
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities - 01 Jan14
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍
Upgrade: iOS iOS 7.0

Timelineinfo

06/05/2013 🔍
06/05/2013 +0 days 🔍
09/18/2013 +105 days 🔍
09/18/2013 +0 days 🔍
09/19/2013 +0 days 🔍
09/20/2013 +1 days 🔍
10/01/2013 +11 days 🔍
05/25/2021 +2793 days 🔍

Sourcesinfo

Vendor: apple.com

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

CVE: CVE-2013-3954 (🔍)
GCVE (CVE): GCVE-0-2013-3954
GCVE (VulDB): GCVE-100-10331
SecurityFocus: 52107
Secunia: 54886 - Apple iOS Multiple Vulnerabilities, Highly Critical
SecurityTracker: 1029054

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

Entryinfo

Created: 09/20/2013 10:34
Updated: 05/25/2021 09:32
Changes: 09/20/2013 10:34 (73), 03/24/2019 14:31 (2), 05/25/2021 09:32 (3)
Complete: 🔍
Cache ID: 216:C8B:103

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