The U.S. Computer Emergency Readiness Team is advising people to upgrade to the latest versions of the Firefox Web browser and the Thunderbird email program to plug numerous critical security holes.
Issued this week, the warning
from the agency within the Department of Homeland Security said failing
to use the latest versions would leave computers open to malware
that could enable an attacker to commandeer a PC. US-CERT said some of
the vulnerabilities involved the way Firefox and Thunderbird handle
URLs or images.
"By taking advantage of one or more vulnerabilities in Mozilla products, an attacker may be able to take control of your computer," US-CERT said.