This update fixes several one-byte buffer overruns in the imap annote extension as well as in cached header
handling which can be run by an authenticated user.
Additionally bounds checking in fetchnews was improved
to avoid exploitation by a peer news admin.
Please note that one-byte buffer overflows can not be
exploited to execute arbitrary commands by manipulating
the saved registers on the stack if the compiler used (gcc >= 3)
aligns the stack space. Nevertheless the code behaviour may
be manipulated by overwriting local variables. The result is not
known but ranges between a denial-of-service condition and