Apple today announced a serious security fix for iLife 8.0, Aperture 2, and Max OS 10.4.9 through 10.4.11. Each of the security flaws, if left unpatched, could lead to "arbitrary code execution," which means attackers could run code of their choice on your system.What makes these flaws especially serious is the fact that all that is needed is a maliciously crafted TIFF or JPEG image file. Apple, unlike Microsoft and many other software vendors, usually does not provide much detail into the security flaws it patches. The information below is as granular as Apple ever gets, and is from the advisory the company published today:

Life Support 8.3.1

CVE-ID: CVE-2008-2327 Available for: iLife 8.0 or Aperture 2, on Mac OS v10.4.9 through v10.4.11 Impact: Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution Description: Multiple uninitialized memory access issues exist in libTIFF's handling of LZW-encoded TIFF images. Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through proper memory initialization and additional validation of TIFF images. These issues are already addressed in systems running Mac OS X v10.5.5. Credit: Apple.

CVE-ID: CVE-2008-2332 Available for: iLife 8.0 or Aperture 2, on Mac OS v10.4.9 through v10.4.11 Impact: Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution Description: A memory corruption issue exits in the handling of TIFF images. Viewing a maliciously crafted TIFF image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved processing of TIFF images. This issue is already addressed in systems running Mac OS X v10.5.5. Credit to Robert Swiecki of Google Security Team for reporting this issue. CVE-ID: CVE-2008-3608 Available for: iLife 8.0 or Aperture 2, on Mac OS v10.4.9 through v10.4.11 Impact: Viewing a large maliciously crafted JPEG image may lead to an unexpected application termination or arbitrary code execution Description: A memory corruption issue exists in ImageIO's handling of embedded ICC profiles in JPEG images. Viewing a large maliciously crafted JPEG image may lead to an unexpected application termination or arbitrary code execution. This update addresses the issue through improved processing of ICC profiles. This issue is already addressed in systems running Mac OS X v10.5.5. Credit: Apple.