. the <bookinfo> element must also be updated for each new edition.
. /////////////////////////////////////////////////////////////////////////////
-.set previousversion "4.71"
-.set version "4.72"
+.set previousversion "4.72"
+.set version "4.73"
.set ACL "access control lists (ACLs)"
.set I " "
<author><firstname>Exim</firstname><surname>Maintainers</surname></author>
<authorinitials>EM</authorinitials>
<revhistory><revision>
- <revnumber>4.72</revnumber>
- <date>29 May 2010</date>
+ <revnumber>4.73</revnumber>
+ <date>19 Nov 2010</date>
<authorinitials>EM</authorinitials>
</revision></revhistory>
<copyright><year>2009</year><holder>University of Cambridge</holder></copyright>
When this option is used by a caller other than root, and the list is different
from the compiled-in list, Exim gives up its root privilege immediately, and
runs with the real and effective uid and gid set to those of the caller.
-However, if a TRUSTED_CONFIG_PREFIX_LIST file is defined in &_Local/Makefile_&,
-root privilege is retained for any configuration file which matches a prefix
-listed in that file.
-
-Leaving TRUSTED_CONFIG_PREFIX_LIST unset precludes the possibility of testing
-a configuration using &%-C%& right through message reception and delivery,
+However, if a TRUSTED_CONFIG_LIST file is defined in &_Local/Makefile_&, that
+file contains a list of full pathnames, one per line, for configuration files
+which are trusted. Root privilege is retained for any configuration file so
+listed, as long as the caller is the Exim user (or the user specified in the
+CONFIGURE_OWNER option, if any), and as long as the configuration file is
+not writeable by inappropriate users or groups.
+
+Leaving TRUSTED_CONFIG_LIST unset precludes the possibility of testing a
+configuration using &%-C%& right through message reception and delivery,
even if the caller is root. The reception works, but by that time, Exim is
running as the Exim user, so when it re-executes to regain privilege for the
delivery, the use of &%-C%& causes privilege to be lost. However, root can
option, which may specify a single file or a list of files. However, when
&%-C%& is used, Exim gives up its root privilege, unless called by root (or
unless the argument for &%-C%& is identical to the built-in value from
-CONFIGURE_FILE) or matches a prefix listed in the TRUSTED_CONFIG_PREFIX_LIST
-file. &%-C%& is useful mainly for checking the syntax of configuration files
-before installing them. No owner or group checks are done on a configuration
-file specified by &%-C%&, if root privilege has been dropped.
+CONFIGURE_FILE), or is listed in the TRUSTED_CONFIG_LIST file and the caller
+is the Exim user or the user specified in the CONFIGURE_OWNER setting. &%-C%&
+is useful mainly for checking the syntax of configuration files before
+installing them. No owner or group checks are done on a configuration file
+specified by &%-C%&, if root privilege has been dropped.
Even the Exim user is not trusted to specify an arbitrary configuration file
with the &%-C%& option to be used with root privileges, unless that file is
-listed in the TRUSTED_CONFIG_PREFIX_LIST file. This locks out the possibility
-of testing a configuration using &%-C%& right through message reception and
+listed in the TRUSTED_CONFIG_LIST file. This locks out the possibility of
+testing a configuration using &%-C%& right through message reception and
delivery, even if the caller is root. The reception works, but by that time,
Exim is running as the Exim user, so when it re-execs to regain privilege for
the delivery, the use of &%-C%& causes privilege to be lost. However, root
It is permitted to specify a space as the separator character. Further
white space is ignored.
-.new
.cindex "TXT record" "in &(dnsdb)& lookup"
For TXT records with multiple items of data, only the first item is returned,
unless a separator for them is specified using a comma after the separator
.endd
It is permitted to specify a space as the separator character. Further
white space is ignored.
-.wen
.section "Pseudo dnsdb record types" "SECID66"
.cindex "MX record" "in &(dnsdb)& lookup"
into the Exim account from running a privileged Exim with an arbitrary
configuration file, and using it to break into other accounts.
.next
-If a non-trusted configuration file (i.e. the default configuration file or
-one which is trusted by virtue of matching a prefix listed in the
-TRUSTED_CONFIG_PREFIX_LIST file) is specified with &%-C%&, or if macros are
-given with &%-D%& (but see the next item),
-then root privilege is retained only if the caller of Exim
-is root. This locks out the possibility of testing a configuration using &%-C%&
+If a non-trusted configuration file (i.e. not the default configuration file
+or one which is trusted by virtue of being listed in the TRUSTED_CONFIG_LIST
+file) is specified with &%-C%&, or if macros are given with &%-D%& (but see
+the next item), then root privilege is retained only if the caller of Exim is
+root. This locks out the possibility of testing a configuration using &%-C%&
right through message reception and delivery, even if the caller is root. The
reception works, but by that time, Exim is running as the Exim user, so when
it re-execs to regain privilege for the delivery, the use of &%-C%& causes
git://git.exim.org / users / heiko / exim.git / blobdiff