The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade RHEL:8
firefox
to version 0:78.9.0-1.el8_1 or higher.
This issue was patched in RHSA-2021:0991
.
Note: Versions mentioned in the description apply only to the upstream firefox
package and not the firefox
package as distributed by RHEL
.
See How to fix?
for RHEL:8
relevant fixed versions and status.
A malicious extension could have opened a popup window lacking an address bar. The title of the popup lacking an address bar should not be fully controllable, but in this situation was. This could have been used to spoof a website and attempt to trick the user into providing credentials. This vulnerability affects Firefox ESR < 78.9, Firefox < 87, and Thunderbird < 78.9.