diff options
Diffstat (limited to 'doc/doc-docbook')
| -rw-r--r-- | doc/doc-docbook/spec.xfpt | 45 |
1 files changed, 22 insertions, 23 deletions
diff --git a/doc/doc-docbook/spec.xfpt b/doc/doc-docbook/spec.xfpt index c9b77b88c..22815a9d1 100644 --- a/doc/doc-docbook/spec.xfpt +++ b/doc/doc-docbook/spec.xfpt @@ -3334,13 +3334,13 @@ proceeding any further along the list, and an error is generated. 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 as long as the caller is the Exim user (or the user -specified in the CONFIGURE_OWNER option, if any). +However, if a TRUSTED_CONFIG_LIST file is defined in &_Local/Makefile_&, root +privilege is retained for any configuration file which is listed in that file +as long as the caller is the Exim user (or the user specified in the +CONFIGURE_OWNER option, if any). -Leaving TRUSTED_CONFIG_PREFIX_LIST unset precludes the possibility of testing -a configuration using &%-C%& right through message reception and delivery, +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 @@ -4537,17 +4537,16 @@ A one-off alternate configuration can be specified by the &%-C%& command line 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 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. +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 @@ -33824,15 +33823,15 @@ 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. not 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%& 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 can test reception and -delivery using two separate commands. +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 +privilege to be lost. However, root can test reception and delivery using two +separate commands. .next The WHITELIST_D_MACROS build option declares some macros to be safe to override with &%-D%& if the real uid is one of root, the Exim run-time user or the |