man/man-db-2.7.1-security4.dif

---
 src/mandb.c |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- src/mandb.c
+++ src/mandb.c	2015-05-28 10:43:41.785520616 +0000
@@ -37,6 +37,7 @@
 #include <errno.h>
 #include <sys/types.h>
 #include <sys/stat.h>	/* for chmod() */
+#include <fcntl.h>	/* for open () */
 #include <dirent.h>
 #include <unistd.h>
 #include <signal.h>
@@ -446,10 +447,19 @@ static int mandb (const char *catpath, c
 	char *dbname;
 	char *cachedir_tag;
 	struct stat st;
+	int fd;
 
 	dbname = mkdbname (catpath);
 	database = xasprintf ("%s/%d", catpath, getpid ());
 
+	/* Just for the case that catpath isn't a system catpath */
+	drop_effective_privs ();
+	fd = open (database, O_WRONLY | O_CREAT | O_EXCL, 0644);
+	regain_effective_privs ();
+	if (fd < 0)
+		error (FATAL, errno, _("can't create a temporary filename"));
+	close(fd);
+
 	if (!quiet) 
 		printf (_("Processing manual pages under %s...\n"), manpath);
 
@@ -458,11 +468,13 @@ static int mandb (const char *catpath, c
 		if (stat (cachedir_tag, &st) == -1 && errno == ENOENT) {
 			FILE *cachedir_tag_file;
 
+			drop_effective_privs ();
 			cachedir_tag_file = fopen (cachedir_tag, "w");
 			if (cachedir_tag_file) {
 				fputs (CACHEDIR_TAG, cachedir_tag_file);
 				fclose (cachedir_tag_file);
 			}
+			regain_effective_privs ();
 		}
 		free (cachedir_tag);
 	}