CSS Letter-Spacing Heap Overflow Vulnerability An anonymous researcher for TippingPoint and the Zero Day Initiative discovered an integer overflow triggered by the CSS letter-spacing property. This results in in under-allocating memory and ultimately a heap buffer overflow which could be exploited to run code of the attacker's choice. The overflow condition itself does not require JavaScript and thus could affect Thunderbird via received mail, but without scripting to prepare memory it may not be possible to exploit this condition in mail. Workaround Upgrade to the fixed version. References [1]ZDI-06-009 [2]https://bugzilla.mozilla.org/show_bug.cgi?id=325403 This issue also affects FC4
Lifting Embargo
Fedora Core 5 is no longer supported, could you please reproduce this with the updated version of the currently supported distribution (Fedora Core 6, or Fedora 7, or Rawhide)? If this issue turns out to still be reproducible, please let us know in this bug report. If after a month's time we have not heard back from you, we will have to close this bug as CANTFIX. Setting status to NEEDINFO, and awaiting information from the reporter. Thanks in advance.
We haven't got any reply to the last question about reproducability of the bug with Fedora Core 6, Fedora 7, or Fedora devel. Mass closing this bug, so if you have new information that would help us fix this bug, please reopen it with the additional information.