Author: jamie
Date: Thu Dec 18 18:10:39 2014
New Revision: 275906
URL: https://svnweb.freebsd.org/changeset/base/275906
Log:
Setgid before running a command as a specified user. Previously only
initgroups(3) was called, what isn't quite enough. This brings jail(8)
in line with jexec(8), which was already doing the right thing.
PR: 195984
MFC after: 1 week
Modified:
head/usr.sbin/jail/command.c
Modified: head/usr.sbin/jail/command.c
==============================================================================
--- head/usr.sbin/jail/command.c Thu Dec 18 16:57:22 2014
(r275905)
+++ head/usr.sbin/jail/command.c Thu Dec 18 18:10:39 2014
(r275906)
@@ -667,6 +667,11 @@ run_command(struct cfjail *j)
if (term != NULL)
setenv("TERM", term, 1);
}
+ if (setgid(pwd->pw_gid) < 0) {
+ jail_warnx(j, "setgid %d: %s", pwd->pw_gid,
+ strerror(errno));
+ exit(1);
+ }
if (setusercontext(lcap, pwd, pwd->pw_uid, username
? LOGIN_SETALL & ~LOGIN_SETGROUP & ~LOGIN_SETLOGIN
: LOGIN_SETPATH | LOGIN_SETENV) < 0) {
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