Synopsis: Important: thunderbird security update
Issue Date: 2011-09-06
Mozilla Thunderbird is a standalone mail and newsgroup client.
The RHSA-2011:1243 Thunderbird update rendered HTTPS certificates signed by
a certain Certificate Authority (CA) as untrusted, but made an exception
for a select few. This update removes that exception, rendering every HTTPS
certificate signed by that CA as untrusted. (BZ#735483)
All Thunderbird users should upgrade to this updated package, which
resolves this issue. All running instances of Thunderbird must be
restarted for the update to take effect.
– Scientific Linux Development Team