Analysis by: kathleenno
ALIASES:

Trojan.Gen.2 (Symantec); Exploit.IphoneOS.Pdfka.c (Kaspersky); Troj/PDFEx-ES (Sophos); Exploit.iPhoneOS (Ikarus)

 PLATFORM:

Apple iOS v 4.x running on iPhone, iPad, and iPod touch

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:

  • Threat Type: Trojan

  • Destructiveness: No

  • Encrypted: Yes

  • In the wild: Yes

  OVERVIEW

This Trojan is hosted on a website and takes advantage of a vulnerability in CoreGraphics (CVE-2011-0226) and IOMobileFrameBuffer (CVE-2011-0227) of iOS to aid in jailbreaking an iPhone, iPad, or iPod touch without connecting the device to a computer.

This Trojan may be hosted on a website and run when a user accesses the said website.

  TECHNICAL DETAILS

File Size: Varies
File Type: PDF
Initial Samples Received Date: 13 Jul 2011

Arrival Details

This Trojan may be hosted on a website and run when a user accesses the said website.

NOTES:
It is hosted on the following website:

  • www.{BLOCKED}eakme.com

It takes advantage of a vulnerability in CoreGraphics (CVE-2011-0226) and IOMobileFrameBuffer (CVE-2011-0227) of iOS to aid in jailbreaking an iPhone, iPad, or iPod touch without connecting the device to a computer. More information on these vulnerabilities can be found at this Apple Support page.

It is capable of affecting the following iOS versions:

  • iPad 4.3 to 4.3.3
  • iPhone 4.2.6 to 4.3.3
  • iPod touch 4.3 to 4.3.3

The exploit is triggered once a user visits the abovementioned jailbreak site and chooses to install the offered jailbreak (JailbreakMe 3) via the iOS device's Safari browser. As a result, the user is allowed to install unauthorized applications on the iOS device.

  SOLUTION

Minimum Scan Engine: 8.900
FIRST VSAPI PATTERN FILE: 8.286.06
FIRST VSAPI PATTERN DATE: 13 Jul 2011

Step 1

For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.

Step 2

Scan your computer with your Trend Micro product to delete files detected as TROJ_PIDIEF.SMXZ. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.

Step 3

Download and apply this security patch Refrain from using these products until the appropriate patches have been installed. Trend Micro advises users to download critical patches upon release by vendors.


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