Vulnerability Monitor

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CVE-2011-0228

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.

Security Impact Summary

CVE-2011-0228 is a security vulnerability that . Impacting 1 product from apple organizations running these solutions should prioritize assessment and patching.

Historical Context

Documented in 2011, this vulnerability occurred amid the cloud computing expansion era, where traditional network perimeter security models were being reevaluated. Organizations were transitioning from isolated infrastructure to interconnected systems, creating new attack surfaces that vulnerabilities like this could exploit.

Published

2011-08-29T20:55:00.753

Last Modified

2026-04-29T01:13:23.040

Status

Modified

Source

[email protected]

Severity

CVSSv2: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:P/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: PARTIAL
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	apple	iphone_os	≤ 4.2.9	Yes
Operating System	apple	iphone_os	1.0.0	Yes
Operating System	apple	iphone_os	1.0.1	Yes
Operating System	apple	iphone_os	1.0.2	Yes
Operating System	apple	iphone_os	1.1.0	Yes
Operating System	apple	iphone_os	1.1.1	Yes
Operating System	apple	iphone_os	1.1.2	Yes
Operating System	apple	iphone_os	1.1.3	Yes
Operating System	apple	iphone_os	1.1.4	Yes
Operating System	apple	iphone_os	1.1.5	Yes
Operating System	apple	iphone_os	2.0	Yes
Operating System	apple	iphone_os	2.0.0	Yes
Operating System	apple	iphone_os	2.0.1	Yes
Operating System	apple	iphone_os	2.0.2	Yes
Operating System	apple	iphone_os	2.1	Yes
Operating System	apple	iphone_os	2.1.1	Yes
Operating System	apple	iphone_os	2.2	Yes
Operating System	apple	iphone_os	2.2.1	Yes
Operating System	apple	iphone_os	3.0	Yes
Operating System	apple	iphone_os	3.0.1	Yes
Operating System	apple	iphone_os	3.1	Yes
Operating System	apple	iphone_os	3.1.2	Yes
Operating System	apple	iphone_os	3.1.3	Yes
Operating System	apple	iphone_os	3.2	Yes
Operating System	apple	iphone_os	3.2.1	Yes
Operating System	apple	iphone_os	3.2.2	Yes
Operating System	apple	iphone_os	4.0	Yes
Operating System	apple	iphone_os	4.0.1	Yes
Operating System	apple	iphone_os	4.0.2	Yes
Operating System	apple	iphone_os	4.1	Yes
Operating System	apple	iphone_os	4.2.1	Yes
Operating System	apple	iphone_os	4.2.5	Yes
Operating System	apple	iphone_os	4.2.8	Yes
Operating System	apple	iphone_os	4.3.0	Yes
Operating System	apple	iphone_os	4.3.1	Yes
Operating System	apple	iphone_os	4.3.2	Yes
Operating System	apple	iphone_os	4.3.3	Yes
Operating System	apple	iphone_os	4.3.4	Yes

References

http://lists.apple.com/archives/security-announce/2011//Jul/msg00004.html Vendor Advisory ([email protected])
http://lists.apple.com/archives/security-announce/2011//Jul/msg00005.html Vendor Advisory ([email protected])
http://secunia.com/advisories/45369 Vendor Advisory ([email protected])
http://securityreason.com/securityalert/8361 ([email protected])
http://securitytracker.com/id?1025837 ([email protected])
http://support.apple.com/kb/HT4824 ([email protected])
http://support.apple.com/kb/HT4825 Vendor Advisory ([email protected])
http://www.securityfocus.com/archive/1/518982/100/0/threaded ([email protected])
http://www.securityfocus.com/bid/48877 ([email protected])
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-007.txt ([email protected])
http://lists.apple.com/archives/security-announce/2011//Jul/msg00004.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2011//Jul/msg00005.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/45369 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://securityreason.com/securityalert/8361 (af854a3a-2127-422b-91ae-364da2661108)
http://securitytracker.com/id?1025837 (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT4824 (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT4825 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/archive/1/518982/100/0/threaded (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/48877 (af854a3a-2127-422b-91ae-364da2661108)
https://www.trustwave.com/spiderlabs/advisories/TWSL2011-007.txt (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For apple's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.