Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2011-3427

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.

Security Impact Summary

CVE-2011-3427 is a security vulnerability that . Impacting 2 products from apple, 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

2011-10-14T10:55:10.683

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 2.6 (LOW)

CVSSv2 Vector

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

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

Exploitability Score

4.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	apple	apple_tv	4.0	Yes
Application	apple	apple_tv	4.1	Yes
Application	apple	apple_tv	4.2	Yes
Application	apple	apple_tv	4.3	Yes
Operating System	apple	iphone_os	3.0	Yes
Operating System	apple	iphone_os	3.1	Yes
Operating System	apple	iphone_os	3.1	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	Yes
Operating System	apple	iphone_os	3.2.1	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	Yes
Operating System	apple	iphone_os	4.0	Yes
Operating System	apple	iphone_os	4.0.1	Yes
Operating System	apple	iphone_os	4.0.1	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	4.3.5	Yes
Operating System	apple	iphone_os	4.3.5	Yes
Operating System	apple	iphone_os	4.3.5	Yes

References

http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html Vendor Advisory ([email protected])
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html Vendor Advisory ([email protected])
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html ([email protected])
http://osvdb.org/76326 ([email protected])
http://support.apple.com/kb/HT4999 Vendor Advisory ([email protected])
http://support.apple.com/kb/HT5001 Vendor Advisory ([email protected])
https://exchange.xforce.ibmcloud.com/vulnerabilities/70547 ([email protected])
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html (af854a3a-2127-422b-91ae-364da2661108)
http://osvdb.org/76326 (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT4999 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.apple.com/kb/HT5001 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://exchange.xforce.ibmcloud.com/vulnerabilities/70547 (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.