Vulnerability Alert

Multiple Apple Products CoreGraphics JBIG2-Encoded PDF Buffer Overflow Code Execution Vulnerability

 
Threat Type:CWE-119: Buffer Errors
IntelliShield ID:30803
Version:2
First Published:2013 September 16 17:01 GMT
Last Published:2013 September 20 16:07 GMT
Port: Not available
CVE:CVE-2013-1025
BugTraq ID:62368
Urgency:Unlikely Use
Credibility:Confirmed
Severity:Mild Damage
CVSS Base:6.8 CVSS Calculator
CVSS Version 2.0
CVSS Temporal:5.0
 
Version Summary:Apple has released an additional security advisory and updated software to address the CoreGraphics JBIG2-Encoded PDF buffer overflow code execution vulnerability.
 
 
Description
A vulnerability in multiple Apple products could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service (DoS) condition on a targeted system.

The vulnerability is due to the improper handling of certain PDF files by the affected software. An attacker could exploit this vulnerability by convincing a user to open a malicious PDF file. Successful exploitation could allow the attacker to execute arbitrary code or cause the affected application to terminate unexpectedly, resulting in a DoS condition.

Apple has confirmed the vulnerability and released software updates.
 
Warning Indicators
The following Apple product are vulnerable:
  • OS X Mountain Lion versions 10.8.4 and prior
  • iOS versions prior to 7.0
 
IntelliShield Analysis
To exploit the vulnerability, the attacker may provide a file to the user and persuade the user to open or execute the file by using misleading language or instructions.

Apple reports that this vulnerability has been mitigated with improved bounds checking.
 
Vendor Announcements
Apple has released security advisories at the following links: HT5880 and HT5934
 
Impact
An unauthenticated, remote attacker could exploit the vulnerability to execute arbitrary code or cause unexpected termination of the affected software, resulting in a DoS condition.
 
Technical Information
The vulnerability is due to insufficient bounds checks performed by the CoreGraphics component of the affected software while handling user-supplied PDF files.

An unauthenticated, remote attacker could exploit the vulnerability by persuading a user to open a crafted JBIG2-encoded PDF file. If successful, the attacker could trigger a buffer overflow condition, corrupting memory. The attacker could use this condition to execute arbitrary code on the targeted system or terminate the affected software unexpectedly, resulting in a DoS condition.
 
Safeguards
Administrators are advised to apply the appropriate updates.

Users are advised not to open unsolicited email attachments. Users should verify that attachments are safe before opening them.
 
Patches/Software
Apple has released updated software at the following links:
Mac OS X Mountain Lion 10.8.5
OS X Mountain Lion Update 10.8.5
OS X Mountain Lion Update 10.8.5 (Combo)

Apple has released software updates, which are available through iTunes or Software Update on devices running Apple iOS.
 
Alert History
 
Version 1, September 16, 2013, 5:01 PM: Apple Mac OS X contains a vulnerability that could allow an unauthenticated, remote attacker to execute arbitrary code or cause a denial of service condition on a targeted system. Updates are available.


Product Sets
 
The security vulnerability applies to the following combinations of products.

Primary Products:
AppleiOS 5.0 Base | 5.1 Base | 6.0 Base | 6.1 Base, .1, .2, .3
AppleMac OS X 10.8 Base | 10.8.1 Base | 10.8.2 Base | 10.8.3 Base | 10.8.4 Base

Associated Products:
N/A




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