rsync 2.6.6pre1 released (ALERT: info on zlib security flaw)
wayned at samba.org
Fri Jul 8 21:10:19 GMT 2005
[I neglected to cross-post this from the rsync-announce list to the
regular rsync mailing list when I sent this out yesterday.]
There has been some talk about a zlib security problem that could let
someone overflow the buffers in the zlib decompression code, potentially
allowing someone to craft an exploit to execute arbitrary code. Since
this is a decompression bug, this can only affect an rsync daemon if
it allows uploads with the --compress option enabled.
If you run a daemon that allows uploads, you may wish to add this line
to your rsyncd.conf file:
refuse options = compress
(If you already refuse other options, add "compress" after a space to
that line instead of adding a new line.)
I have just finished updating the zlib code in CVS to version 1.2.2 plus
a security patch that fixes this latest exploit. The other changes in
CVS are all worthwhile fixes, so I have decided to release the current
CVS version as 2.6.6pre1 -- the first pre-release of version 2.6.6.
You can read about all the changes between 2.6.5 and 2.6.6pre1 here:
You can grab the source tar and its signature here:
If you exercise the compression code of this pre-release version of
rsync, please drop me a line and let me know. Thanks!
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