Fortinet Discovers Mozilla Firefox Vulnerability
SolutionsUsers should apply the solution provided by Mozilla.
FortiGuard Labs has posted a document that recommends further mitigation strategy for this vulnerability.
Firefox loads a certain library ("dwmapi.dll") as part of its startup routine. If an attacker can successfully plant a malicious DLL with this filename on the victim's system, Firefox can mistakenly load the malicious DLL from its current working directory instead of the intended library. For this to occur, the system must not have a valid "dwmapi.dll" file in the search path (ie: Windows XP). This DLL is only loaded at startup so a successful attack requires that Firefox is not currently running when it is asked to open an HTML file and accompanying DLL from the current working directory.
Haifei Li of Fortinet's FortiGuard Labs