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5.0

Apple iOS/macOS mis‑parses URLs, may redirect users

CVE-2011-3246 · published 15 years ago
Summary

iOS versions before 5.0.1, macOS and macOS Server before 10.7.2 can mishandle specially crafted web addresses, causing the device to visit an unintended website and potentially expose cookies. This could let a remote attacker steer users to malicious sites. Update the operating system to the latest version to resolve the issue.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
apple mac_os_x 10.7.0
10.7.1
cpe:2.3:o:apple:mac_os_x:10.7.0:*:*:*:*:*:*:*
apple mac_os_x_server 10.7.0
10.7.1
cpe:2.3:o:apple:mac_os_x_server:10.7.0:*:*:*:*:*:*:*
apple iphone_os 3.0
3.1
3.1.2
3.1.3
3.2
3.2.1
3.2.2
4.0
4.0.1
4.0.2
4.1
4.2.1
7 more version ranges
cpe:2.3:o:apple:iphone_os:3.0:-:iphone:*:*:*:*:*
Original advisory text
CFNetwork in Apple iOS before 5.0.1 and Mac OS X 10.7 before 10.7.2 does not properly parse URLs, which allows remote attackers to trigger visits to unintended web sites, and transmission of cookie...
CFNetwork in Apple iOS before 5.0.1 and Mac OS X 10.7 before 10.7.2 does not properly parse URLs, which allows remote attackers to trigger visits to unintended web sites, and transmission of cookies to unintended web sites, via a crafted (1) http or (2) https URL.
References
Fix within
Internet-facing 14 days
Internal 60 days
  • Not known to be exploited
  • Can be exploited automatically (estimated)
  • Gives an attacker partial control (estimated)
Severity
5.0 Medium
Exploitation
3% chance of attack within 30 days
Type
CWE-200Information Exposure
Timeline
Published14 Oct 2011
Updated31 Oct 2026
First seen29 Sep 2026
Sources
CVE-2011-3246 · NVD
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