CVE-2011-3253

iPhone OS - Unprotected User Data Exposure via CalDAV SSL Certificate Validation Bypass

Title source: llm
STIX 2.1

Description

CalDAV in Apple iOS before 5 does not validate X.509 certificates for SSL sessions, which allows man-in-the-middle attackers to spoof calendar servers and obtain sensitive information via an arbitrary certificate.

References (2)

Core 2
Core References
Vendor Advisory vendor-advisory x_refsource_apple
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
Vendor Advisory x_refsource_confirm
http://support.apple.com/kb/HT4999

Scores

EPSS 0.0057
EPSS Percentile 42.9%

Details

CWE
CWE-200
Status published
Products (19)
apple/iphone_os 3.0
apple/iphone_os 3.1 (3 CPE variants)
apple/iphone_os 3.1.2
apple/iphone_os 3.1.3
apple/iphone_os 3.2 (2 CPE variants)
apple/iphone_os 3.2.1 (2 CPE variants)
apple/iphone_os 3.2.2
apple/iphone_os 4.0 (3 CPE variants)
apple/iphone_os 4.0.1 (3 CPE variants)
apple/iphone_os 4.0.2
... and 9 more
Published Oct 14, 2011
Tracked Since Feb 18, 2026