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Apple patches multiple Mac OS X flaws

Bill Brenner, Senior News Writer
Apple has fixed multiple security flaws in Mac OS X that attackers could exploit to run malicious code on targeted machines, trigger a denial of service or boost their user privileges.

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03 May 2007
The Cupertino, Calif.-based vendor has detailed the flaws in Apple security update 2007-005. They include:

  • An implementation error in the Alias Manager keeps the operating system from showing identically named files contained in identically named mounted disk images. Attackers could exploit the issue to trick users into opening malicious programs.

  • An integer-overflow error in CoreGraphics occurs when malformed .pdf files are handled. An attacker could exploit the flaw to run malicious code on a targeted system by tricking a user into opening a malicious .pdf file.

  • An error in crontabs occurs when the daily clean-up script is launched. Attackers could exploit this to cause file systems mounted in the "/tmp" directory to be deleted.

  • Attackers could exploit a buffer-overflow error in the UPnP IGD (Internet Gateway Device Standardised Device Control Protocol) code used to create port mappings on home NAT gateways in iChat to run malicious code by sending a specially crafted packet.

  • Local attackers could exploit an implementation error in the PPP daemon when loading plugins via the command line to obtain system privileges.

  • Attackers could exploit an error in the screen program to cause a denial of service.

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