Apple Mac OS X open safe files after downloading command execution

macosx-safefiletype-command-execution (25269) The risk level is classified as HighHigh Risk

Description:

Apple Mac OS X could allow a remote attacker to execute arbitrary shell commands on the system, caused by improper validation of file types by the Safari, LaunchServices, and CoreTypes components. This vulnerability would allow an attacker to trick a user into opening a malicious shell script that would appear to be a file type that is safe for opening. A remote attacker could exploit this vulnerability by persuading a victim to visit a malicious Web page or by sending a malicious HTML email attachment.

Note: This is a variation of the vulnerability described in US-CERT Vulnerability Note VU#999708.

Platforms Affected:

  • Apple, Mac OS X 10.4
  • Apple, Mac OS X 10.4.1
  • Apple, Mac OS X 10.4.2
  • Apple, Mac OS X 10.4.3
  • Apple, Mac OS X 10.4.4
  • Apple, Mac OS X 10.4.5
  • Apple, Mac OS X Server 10.4
  • Apple, Mac OS X Server 10.4.1
  • Apple, Mac OS X Server 10.4.2
  • Apple, Mac OS X Server 10.4.3
  • Apple, Mac OS X Server 10.4.4
  • Apple, Mac OS X Server 10.4.5

Remedy:

Apply Apple Security Update 2006-002, available from the Apple Web site. See References.

As a workaround, disable the "Open safe files after downloading" option in Safari Web browser.

Consequences:

Gain Access

References:

  • Apple Security Update 2006-002, About Security Update 2006-002 at http://docs.info.apple.com/article.html?artnum=303453.
  • Apple Web site, Apple - Support - Downloads at http://www.apple.com/support/downloads/.
  • IBM Internet Security Systems X-Force Database, Apple Mac OS X _MACOSX ZIP archive shell command execution at http://xforce.iss.net/xforce/xfdb/24808.
  • CVE-2006-0397: Unspecified vulnerability in Safari, LaunchServices, and/or CoreTypes in Apple Mac OS X 10.4 up to 10.4.5 allows attackers to trick a user into opening an application that appears to be a safe file type. NOTE: due to the lack of specific information in the vendor advisory, it is not clear how CVE-2006-0397, CVE-2006-0398, and CVE-2006-0399 are different.
  • CVE-2006-0398: Unspecified vulnerability in Safari, LaunchServices, and/or CoreTypes in Apple Mac OS X 10.4 up to 10.4.5 allows attackers to trick a user into opening an application that appears to be a safe file type. NOTE: due to the lack of specific information in the vendor advisory, it is not clear how CVE-2006-0397, CVE-2006-0398, and CVE-2006-0399 are different.
  • CVE-2006-0399: Unspecified vulnerability in Safari, LaunchServices, and/or CoreTypes in Apple Mac OS X 10.4 up to 10.4.5 allows attackers to trick a user into opening an application that appears to be a safe file type. NOTE: due to the lack of specific information in the vendor advisory, it is not clear how CVE-2006-0397, CVE-2006-0398, and CVE-2006-0399 are different.
  • OSVDB ID: 23869: Apple Safari Safe File Type Bypass Variation
  • OSVDB ID: 23870: Mac OS X LaunchServices Safe File Type Bypass
  • OSVDB ID: 23871: Mac OS X CoreTypes Safe File Type Bypass
  • SA19129: Mac OS X Security Update Fixes Multiple Vulnerabilities
  • SECTRACK ID: 1015760: Apple Safari `Safe` File Type Processing Flaw May Let Remote Users Execute Arbitrary Code
  • VUPEN/ADV-2006-0949: Apple Mac OS X Multiple Security Bypass and Buffer Overflow Vulnerabilities

Reported:

Mar 13, 2006

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