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An issue was discovered in the auth component in Dovecot 2.2 and 2.3 before
2.3.20. When two passdb configuration entries exist with the same driver
and args settings, incorrect username_filter and mechanism settings can be
applied to passdb definitions. These incorrectly applied settings can lead
to an unintended security configuration and can permit privilege escalation
in certain configurations. The documentation does not advise against the
use of passdb definitions that have the same driver and args settings. One
such configuration would be where an administrator wishes to use the same
PAM configuration or passwd file for both normal and master users but use
the username_filter setting to restrict which of the users is able to be a
master user.
https://dovecot.org/pipermail/dovecot-news/2022-July/000477.html
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
(cherry picked from commit 43899226b2)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches