Mozilla security flaw (highly critical)

Two vulnerabilities have been reported in Mozilla, which can be exploited by malicious people to bypass certain security restrictions and compromise a user system. 

These 2 vulnerabilities where leveled as highly critical!

These 2 flaws where found:
1) An error in the restriction of privileged XUL files can e.g. be exploited to open a local privileged XUL file by tricking a user into dragging a faked scrollbar.

2) A boundary error in the GIF image processing of Netscape extension 2 blocks can be exploited to cause a heap-based buffer overflow via a specially crafted image.