The ThemeInstalledInfoBarDelegate::Observe function in browser/extensions/theme_installed_infobar_delegate.cc in Google Chrome before 8.0.552.224 and Chrome OS before 8.0.552.343 does not properly handle incorrect tab interaction by an extension, which allows user-assisted remote attackers to cause a denial of service (application crash) via a crafted extension.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.