shadow-utils/SOURCES/shadow-4.6-chgrp-guard.patch
2021-09-10 04:28:41 +00:00

45 lines
1.9 KiB
Diff

diff -up shadow-4.6/man/usermod.8.xml.chgrp-guard shadow-4.6/man/usermod.8.xml
--- shadow-4.6/man/usermod.8.xml.chgrp-guard 2018-11-06 09:08:54.170095358 +0100
+++ shadow-4.6/man/usermod.8.xml 2018-12-18 15:24:12.283181180 +0100
@@ -195,6 +195,12 @@
The group ownership of files outside of the user's home directory
must be fixed manually.
</para>
+ <para>
+ The change of the group ownership of files inside of the user's
+ home directory is also not done if the home dir owner uid is
+ different from the current or new user id. This is safety measure
+ for special home directories such as <filename>/</filename>.
+ </para>
</listitem>
</varlistentry>
<varlistentry>
@@ -372,6 +378,12 @@
must be fixed manually.
</para>
<para>
+ The change of the user ownership of files inside of the user's
+ home directory is also not done if the home dir owner uid is
+ different from the current or new user id. This is safety measure
+ for special home directories such as <filename>/</filename>.
+ </para>
+ <para>
No checks will be performed with regard to the
<option>UID_MIN</option>, <option>UID_MAX</option>,
<option>SYS_UID_MIN</option>, or <option>SYS_UID_MAX</option>
diff -up shadow-4.6/src/usermod.c.chgrp-guard shadow-4.6/src/usermod.c
--- shadow-4.6/src/usermod.c.chgrp-guard 2018-12-18 15:24:12.286181249 +0100
+++ shadow-4.6/src/usermod.c 2018-12-18 15:26:51.227841435 +0100
@@ -2336,7 +2336,10 @@ int main (int argc, char **argv)
}
if (!mflg && (uflg || gflg)) {
- if (access (dflg ? prefix_user_newhome : prefix_user_home, F_OK) == 0) {
+ struct stat sb;
+
+ if (stat (dflg ? prefix_user_newhome : prefix_user_home, &sb) == 0 &&
+ ((uflg && sb.st_uid == user_newid) || sb.st_uid == user_id)) {
/*
* Change the UID on all of the files owned by
* `user_id' to `user_newid' in the user's home