Apple iOS up to 5.1.1 System Logs access control

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Apple iOS up to 5.1.1 (Smartphone Operating System) and classified as critical. Affected by this vulnerability is an unknown code of the component System Logs Handler. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The System Logs implementation in Apple iOS before 6 does not restrict /var/log access by sandboxed apps, which allows remote attackers to obtain sensitive information via a crafted app that reads log files.

The weakness was disclosed 09/19/2012 as APPLE-SA-2012-09-19-1 as confirmed posting (Website). It is possible to read the advisory at This vulnerability is known as CVE-2012-3743 since 06/19/2012. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 62242 (Apple iOS < 6.0 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 6.0 eliminates this vulnerability. The problem might be mitigated by replacing the product with Google Android as an alternative. The best possible mitigation is suggested to be upgrading to the latest version. 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 (78718) and Tenable (62242).







CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.3
VulDB Temp Score: 6.4
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Class: Access control
CWE: CWE-264

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Nessus ID: 62242
Nessus Name: Apple iOS < 6.0 Multiple Vulnerabilities
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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: iOS 6.0
Alternative: Google Android


06/19/2012 🔍
09/19/2012 +92 days 🔍
09/19/2012 +0 days 🔍
09/19/2012 +0 days 🔍
09/19/2012 +0 days 🔍
09/20/2012 +0 days 🔍
09/20/2012 +0 days 🔍
09/21/2012 +1 days 🔍
12/21/2014 +821 days 🔍
04/13/2021 +2305 days 🔍



Advisory: APPLE-SA-2012-09-19-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2012-3743 (🔍)
X-Force: 78718 - Apple iOS System Logs CVE-2012-3743, Low Risk
Vulnerability Center: 47716 - Apple iOS <6 System Logs implementation Remote Information Disclosure Vulnerability via a Crafted App, Medium
SecurityFocus: 56259 - Apple iPhone/iPad/iPod touch Prior to iOS 6 CVE-2012-3743 Information Disclosure Vulnerability
Secunia: 50586 - Apple iOS Multiple Vulnerabilities, Highly Critical
OSVDB: 85621

scip Labs:


Created: 09/21/2012 01:45 PM
Updated: 04/13/2021 11:48 AM
Changes: 09/21/2012 01:45 PM (78), 06/16/2017 04:15 AM (2), 04/13/2021 11:48 AM (4)
Complete: 🔍
Cache ID: 34:7AE:40


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