Apple Mac OS X up to 10.8 X.509 Certificate Handling information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

A vulnerability was found in Apple Mac OS X up to 10.8 (Operating System). It has been classified as problematic. This affects an unknown function of the component X.509 Certificate Handling. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality, and integrity. The summary by CVE is:

The Data Security component in Apple iOS before 5 and Apple TV before 4.4 does not properly restrict use of the MD5 hash algorithm within X.509 certificates, which makes it easier for man-in-the-middle attackers to spoof servers or obtain sensitive information via a crafted certificate.

The weakness was released 10/22/2013 with Apple as APPLE-SA-2013-10-22-3 as confirmed mailinglist post (Apple Security Mailinglist). The advisory is shared at lists.apple.com. The mailinglist post contains:

Certificates signed using the MD5 hash algorithm were accepted by OS X. This algorithm has known cryptographic weaknesses. Further research or a misconfigured certificate authority could have allowed the creation of X.509 certificates with attacker controlled values that would have been trusted by the system. This would have exposed X.509 based protocols to spoofing, man in the middle attacks, and information disclosure. This update disables support for an X.509 certificate with an MD5 hash for any use other than as a trusted root certificate.
This vulnerability is uniquely identified as CVE-2011-3427 since 09/13/2011. The exploitability is told to be difficult. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1592 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 70561 (Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family MacOS X Local Security Checks.

Upgrading to version 10.9 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (70547) and Tenable (70561). Entries connected to this vulnerability are available at 4428, 4441, 10327 and 10946.

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  • end of life

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.8
VulDB Temp Score: 4.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 70561
Nessus Name: Mac OS X 10.x < 10.9 Multiple Vulnerabilities (BEAST)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Mac OS X 10.9

Timelineinfo

09/13/2011 🔍
10/12/2011 +29 days 🔍
10/12/2011 +0 days 🔍
10/14/2011 +2 days 🔍
10/22/2013 +739 days 🔍
10/22/2013 +0 days 🔍
10/23/2013 +1 days 🔍
06/05/2014 +225 days 🔍
06/01/2021 +2553 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: APPLE-SA-2013-10-22-3
Organization: Apple
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-3427 (🔍)
X-Force: 70547 - Apple iOS and Apple TV X.509 spoofing
Vulnerability Center: 44762 - Apple iOS and Apple TV Remote Information Disclosure via a Crafted Certificate, Low
SecurityFocus: 63290 - Apple iOS CVE-2011-3427 SSL Certificate Validation Spoofing Vulnerability
Secunia: 46377
OSVDB: 76326

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

Entryinfo

Created: 10/23/2013 17:41
Updated: 06/01/2021 08:20
Changes: 10/23/2013 17:41 (73), 05/29/2017 10:35 (3), 06/01/2021 08:20 (3)
Complete: 🔍

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