Follow @Openwall on Twitter for new release announcements and other news
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date: Fri, 15 Jan 2016 12:06:01 +0100
From: Florian Weimer <>
Subject: Re: Qualys Security Advisory - Roaming through the
 OpenSSH client: CVE-2016-0777 and CVE-2016-0778

On 01/14/2016 06:13 PM, Qualys Security Advisory wrote:
> Internal stdio buffering is the most severe of the three problems
> discussed in this section, although GNU/Linux is not affected because
> the glibc mmap()s and munmap()s (and therefore cleanses) stdio buffers.

This will change in glibc 2.23, stdio will use regular malloc and free
for its buffers.  I did not expect this change to have security
implications.  Considering that the actual bug lies elsewhere, and stdio
usage is based on copying out of the buffer (so leaks can still happen
elsewhere), I do not wish to revert this change.


Powered by blists - more mailing lists

Please check out the Open Source Software Security Wiki, which is counterpart to this mailing list.

Confused about mailing lists and their use? Read about mailing lists on Wikipedia and check out these guidelines on proper formatting of your messages.