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Coastal Network Status - Issue Detail
Security
Alert

Multiple Vulnerabilities in Apple Mac OS X could allow Remote Code Execution
Posted: June 12, 2013, 9:44 am
Last Updated: August 12, 2013, 2:44 pm

South Carolina Information Sharing and Analysis Center

 

SC INFORMATION SHARING AND ANALYSIS CENTER BULLETIN

 

DATE ISSUED:        6/5/2013

                                               

SUBJECT:                Multiple Vulnerabilities in Apple Mac OS X could allow Remote Code Execution

 

OVERVIEW:

 

Multiple vulnerabilities have been discovered in Apple's Mac OS X and Mac OS X Server that could allow remote code execution. Mac OS X and Mac OS X Server are operating systems for Apple computers. These vulnerabilities can be exploited if a user visits or is redirected to a specially crafted webpage or opens a specially crafted file, including an email attachment, using a vulnerable version of OS X.

 

Successful exploitation could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

  

DESCRIPTION:

 

Multiple vulnerabilities have been discovered in Apple Mac OS X.  These vulnerabilities can be exploited if a user visits or is redirected to a specially crafted webpage or opens a specially crafted file.

 

The vulnerabilities are as follows:

 

  • A security-bypass vulnerability occurs when SMB file sharing is enabled. An authenticated attacker can exploit this issue to write files outside the shared directory. 
  • A remote buffer-overflow vulnerability occurs because it fails to properly handle PICT images.
  • A security-bypass vulnerability occurs because as attacker with access to a user's session may be able to log into previously accessed sites. An attacker can exploit this issue even if Private Browsing was used. 
  • A remote-code execution issue affects the text glyphs because of an unbounded stack allocation when handling maliciously crafted URLs. 
  • A remote buffer-overflow vulnerability that occurs in the Directory Service daemon. An attacker can leverage this issue to execute arbitrary code within the context of the application. [CVE-2013-0984]
  • A remote-code execution vulnerability occurs because it fails to properly handle text tracks. 
  • A local security-bypass vulnerability affects the Disk Management component of Mac OS X 10.8.3. This issue can be exploited by an unauthorized attacker to allow FileVault to be disabled using the command-line. 

 

Successful exploitation could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

 SYSTEMS AFFECTED:

 

  • Apple OS X 10.8 versions prior to 10.8.4 are vulnerable
  • Apple OS X 10.7.5
  • Apple OS X 10.6.8
  • Apple OS X Server versions prior to 10.6.8

 

RISK:

 

Government:

 

Large and medium government entities: High

Small government entities: High

 

Businesses:

 

Large and medium business entities: High

Small business entities: High

 

Home users: High

 

Recommendations:

We recommend the following actions be taken:

 

·      Apply appropriate patches provided by Apple to affected systems immediately after appropriate testing.

·      Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.

·         Remind users not to download or open files from un-trusted websites.

·      Remind users not to open e-mail attachments from unknown users or suspicious e-mails from trusted sources.

·      Remind users not to click links from unknown sources, or to click links without verifying the intended destination.

 

References:

 

Apple:

http://support.apple.com/kb/HT5784

 

Security Focus:

http://www.securityfocus.com/bid/60329 

http://www.securityfocus.com/bid/60331

http://www.securityfocus.com/bid/60328

 

 

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0990

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0975

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0982

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0983

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0984

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-1024

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-0985

 

 Please feel free to contact the SC ISAC if you have any questions or need any additional information.

 

The SC ISAC will provide amplifying information as it becomes available.

 

SC-ISAC Contact Information

 

Email: SC-ISAC@cio.sc.gov

SC ISAC Security Line: 803-896-1650

24-hour hotline: +1 803-896-0001  Option 2

Fax: +1 803-896-0375

 

Postal address:

 

SC-ISAC

DSIT Budget and Control Board

4430 Broad River Road

Columbia S.C. 29210

SC-ISAC is available via hotline 08:00-17:00 EST (GMT-5)/ EDT (GMT-4)

Monday through Friday

 

Using Encryption

 

We strongly urge you to encrypt sensitive information sent by email. Our

public PGP key is available from:

 

https://sc-isac.sc.gov/public.key

 

NO WARRANTY

 

Any material furnished by SC-ISAC is furnished on an "as is" basis.

 

SC-ISAC makes no warranties of any kind, either expressed or implied as to

any matter including, but not limited to, warranty of fitness for a particular

purpose or merchantability, exclusivity or results obtained from use of the

material. SC-ISAC does not make any warranty of any kind with respect to

freedom from patent, trademark, or copyright infringement.

 

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