Apple iTunes Hit With a New Critical Flaw
Jameson writes "Apple has released a new iTunes version to correct a security vulnerability reported by Mark Litchfield. FrSIRT and Secunia marked the flaw as "critical", because it can be exploited by malicious people to compromise a user's system via maliciously-crafted MPEG4 file.
iTunes 4.8 addresses this issue by improving the validation checks used when loading MPEG4 files."
It's about the focus. The former headline puts the focus on the flaw, while the latter headline puts the focus on the update to iTunes.
As the summary leaves out other features the iTunes update has while explaining the critical flaw that iTunes faced, the submitter clearly intended to focus on the security issues, hence he chose the former headline, which is accurate.
In any case, if the latter headline were used, it wouldn't be as news-worthy, as it would seem to be more of a Slashvertisement for iTunes than actual geek news.