Apple iOS up to 4.x X.509 Certificate Chain Validation input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in Apple iOS up to 4.x. The affected element is an unknown function of the component X.509 Certificate Chain Validation. Executing a manipulation can lead to input validation. The identification of this vulnerability is CVE-2011-0228. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Apple iOS up to 4.x (Smartphone Operating System). This vulnerability affects some unknown functionality of the component X.509 Certificate Chain Validation. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

The Data Security component in Apple iOS before 4.2.10 and 4.3.x before 4.3.5 does not check the basicConstraints parameter during validation of X.509 certificate chains, which allows man-in-the-middle attackers to spoof an SSL server by using a non-CA certificate to sign a certificate for an arbitrary domain.

The weakness was shared 07/26/2011 by Paul Kehrer with SpiderLabs as HT4824 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability was named CVE-2011-0228 since 12/23/2010. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/03/2017). It is expected to see the exploit prices for this product increasing in the near future.

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at support.apple.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (68781), SecurityFocus (BID 48877†), Secunia (SA45369†), SecurityTracker (ID 1025837†) and Vulnerability Center (SBV-33398†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: support.apple.com
Suricata ID: 2013406
Suricata Class: 🔍
Suricata Message: 🔍

Timelineinfo

12/23/2010 🔍
07/25/2011 +214 days 🔍
07/25/2011 +0 days 🔍
07/25/2011 +0 days 🔍
07/26/2011 +1 days 🔍
08/19/2011 +24 days 🔍
08/29/2011 +10 days 🔍
10/03/2011 +35 days 🔍
04/03/2017 +2009 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT4824
Researcher: Paul Kehrer
Organization: SpiderLabs
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2011-0228 (🔍)
GCVE (CVE): GCVE-0-2011-0228
GCVE (VulDB): GCVE-100-4384
X-Force: 68781
SecurityFocus: 48877 - Apple iOS Data Security Certificate Chain Validation Security Vulnerability
Secunia: 45369 - Apple iOS "basicConstraints" X.509 Certificate Chain Validation Vulnerability, Less Critical
SecurityTracker: 1025837 - Apple iOS Certificate Chain Validation Flaw Lets Certain Remote Users Access or Modify SSL/TLS Sessions
Vulnerability Center: 33398 - Apple iOS before 4.2.10 and 4.3 before 4.3.5 SSL Server Spoofing Vulnerability, Medium

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

Entryinfo

Created: 08/19/2011 02:00
Updated: 04/03/2017 10:41
Changes: 08/19/2011 02:00 (74), 04/03/2017 10:41 (10)
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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