VDB-9017 · CVE-2013-3953 · BID 52107

Apple Mac OS X up to 10.8.3 XNU Kernel osfmk/ipc/mach_debuf.c mach_port_space_info information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability was found in Apple Mac OS X up to 10.8.3 (Operating System). It has been rated as problematic. This issue affects the function mach_port_space_info of the file osfmk/ipc/mach_debuf.c of the component XNU Kernel. The manipulation with an unknown input leads to a information disclosure vulnerability. Using CWE to declare the problem leads to CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Impacted is confidentiality. The summary by CVE is:

The mach_port_space_info function in osfmk/ipc/mach_debug.c in the XNU kernel in Apple Mac OS X 10.8.x does not initialize a certain structure member, which allows local users to obtain sensitive information from kernel heap memory via a crafted call.

The weakness was disclosed 04/26/2013 by Stefan Esser with SektionEins GmbH as not defined article (Website). The advisory is shared at antid0te.com. The public release happened without involvement of Apple. The identification of this vulnerability is CVE-2013-3953 since 06/05/2013. The exploitation is known to be easy. An attack has to be approached locally. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

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 7, eliminates this vulnerability. A possible mitigation has been published 6 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (70257). The entries 4661, 8303, 8559 and 8792 are pretty similar.






  • commercial


  • end of life

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍



VulDB Base Score: 🔍
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Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


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

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities - 01 Jan14
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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


Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 7,


04/26/2013 🔍
06/05/2013 +40 days 🔍
06/05/2013 +0 days 🔍
06/07/2013 +2 days 🔍
09/20/2013 +105 days 🔍
10/01/2013 +11 days 🔍
05/14/2021 +2782 days 🔍


Vendor: apple.com

Advisory: antid0te.com
Researcher: Stefan Esser
Organization: SektionEins GmbH
Status: Not defined
Confirmation: 🔍

CVE: CVE-2013-3953 (🔍)
SecurityTracker: 1029054
SecurityFocus: 52107
OSVDB: 93962

scip Labs: https://www.scip.ch/en/?labs.20150108
See also: 🔍


Created: 06/07/2013 06:04 PM
Updated: 05/14/2021 12:50 PM
Changes: 06/07/2013 06:04 PM (61), 05/06/2018 11:30 AM (12), 05/14/2021 12:50 PM (3)
Complete: 🔍


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