diff options
author | Andreas Schwab <schwab@redhat.com> | 2010-10-24 21:43:15 -0400 |
---|---|---|
committer | Petr Baudis <pasky@suse.cz> | 2010-11-01 22:28:48 +0100 |
commit | cd8ba92d3437c83cefdc31ed493cc3731ceec356 (patch) | |
tree | b1e0cd73ba9b846c058c86c602a3b5b826a22032 /elf | |
parent | b0017251495765077d536b43d84bcdbdefe752f4 (diff) | |
download | glibc-cd8ba92d3437c83cefdc31ed493cc3731ceec356.tar.gz glibc-cd8ba92d3437c83cefdc31ed493cc3731ceec356.tar.xz glibc-cd8ba92d3437c83cefdc31ed493cc3731ceec356.zip |
Require suid bit on audit objects in privileged programs
(cherry picked from commit 8e9f92e9d5d7737afdacf79b76d98c4c42980508)
Diffstat (limited to 'elf')
-rw-r--r-- | elf/dl-deps.c | 2 | ||||
-rw-r--r-- | elf/dl-load.c | 20 | ||||
-rw-r--r-- | elf/dl-open.c | 2 | ||||
-rw-r--r-- | elf/rtld.c | 16 |
4 files changed, 20 insertions, 20 deletions
diff --git a/elf/dl-deps.c b/elf/dl-deps.c index 34c6024efa..7191508486 100644 --- a/elf/dl-deps.c +++ b/elf/dl-deps.c @@ -62,7 +62,7 @@ openaux (void *a) { struct openaux_args *args = (struct openaux_args *) a; - args->aux = _dl_map_object (args->map, args->name, 0, + args->aux = _dl_map_object (args->map, args->name, (args->map->l_type == lt_executable ? lt_library : args->map->l_type), args->trace_mode, args->open_mode, diff --git a/elf/dl-load.c b/elf/dl-load.c index 597193c043..8a8ffb4b60 100644 --- a/elf/dl-load.c +++ b/elf/dl-load.c @@ -1802,7 +1802,7 @@ open_verify (const char *name, struct filebuf *fbp, struct link_map *loader, if MAY_FREE_DIRS is true. */ static int -open_path (const char *name, size_t namelen, int preloaded, +open_path (const char *name, size_t namelen, int secure, struct r_search_path_struct *sps, char **realname, struct filebuf *fbp, struct link_map *loader, int whatcode, bool *found_other_class) @@ -1884,7 +1884,7 @@ open_path (const char *name, size_t namelen, int preloaded, /* Remember whether we found any existing directory. */ here_any |= this_dir->status[cnt] != nonexisting; - if (fd != -1 && __builtin_expect (preloaded, 0) + if (fd != -1 && __builtin_expect (secure, 0) && INTUSE(__libc_enable_secure)) { /* This is an extra security effort to make sure nobody can @@ -1953,7 +1953,7 @@ open_path (const char *name, size_t namelen, int preloaded, struct link_map * internal_function -_dl_map_object (struct link_map *loader, const char *name, int preloaded, +_dl_map_object (struct link_map *loader, const char *name, int type, int trace_mode, int mode, Lmid_t nsid) { int fd; @@ -2057,7 +2057,8 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, for (l = loader; l; l = l->l_loader) if (cache_rpath (l, &l->l_rpath_dirs, DT_RPATH, "RPATH")) { - fd = open_path (name, namelen, preloaded, &l->l_rpath_dirs, + fd = open_path (name, namelen, mode & __RTLD_SECURE, + &l->l_rpath_dirs, &realname, &fb, loader, LA_SER_RUNPATH, &found_other_class); if (fd != -1) @@ -2072,14 +2073,15 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, && main_map != NULL && main_map->l_type != lt_loaded && cache_rpath (main_map, &main_map->l_rpath_dirs, DT_RPATH, "RPATH")) - fd = open_path (name, namelen, preloaded, &main_map->l_rpath_dirs, + fd = open_path (name, namelen, mode & __RTLD_SECURE, + &main_map->l_rpath_dirs, &realname, &fb, loader ?: main_map, LA_SER_RUNPATH, &found_other_class); } /* Try the LD_LIBRARY_PATH environment variable. */ if (fd == -1 && env_path_list.dirs != (void *) -1) - fd = open_path (name, namelen, preloaded, &env_path_list, + fd = open_path (name, namelen, mode & __RTLD_SECURE, &env_path_list, &realname, &fb, loader ?: GL(dl_ns)[LM_ID_BASE]._ns_loaded, LA_SER_LIBPATH, &found_other_class); @@ -2088,12 +2090,12 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, if (fd == -1 && loader != NULL && cache_rpath (loader, &loader->l_runpath_dirs, DT_RUNPATH, "RUNPATH")) - fd = open_path (name, namelen, preloaded, + fd = open_path (name, namelen, mode & __RTLD_SECURE, &loader->l_runpath_dirs, &realname, &fb, loader, LA_SER_RUNPATH, &found_other_class); if (fd == -1 - && (__builtin_expect (! preloaded, 1) + && (__builtin_expect (! (mode & __RTLD_SECURE), 1) || ! INTUSE(__libc_enable_secure))) { /* Check the list of libraries in the file /etc/ld.so.cache, @@ -2159,7 +2161,7 @@ _dl_map_object (struct link_map *loader, const char *name, int preloaded, && ((l = loader ?: GL(dl_ns)[nsid]._ns_loaded) == NULL || __builtin_expect (!(l->l_flags_1 & DF_1_NODEFLIB), 1)) && rtld_search_dirs.dirs != (void *) -1) - fd = open_path (name, namelen, preloaded, &rtld_search_dirs, + fd = open_path (name, namelen, mode & __RTLD_SECURE, &rtld_search_dirs, &realname, &fb, l, LA_SER_DEFAULT, &found_other_class); /* Add another newline when we are tracing the library loading. */ diff --git a/elf/dl-open.c b/elf/dl-open.c index e920c7738c..2d3932fb0d 100644 --- a/elf/dl-open.c +++ b/elf/dl-open.c @@ -251,7 +251,7 @@ dl_open_worker (void *a) /* Load the named object. */ struct link_map *new; - args->map = new = _dl_map_object (call_map, file, 0, lt_loaded, 0, + args->map = new = _dl_map_object (call_map, file, lt_loaded, 0, mode | __RTLD_CALLMAP, args->nsid); /* If the pointer returned is NULL this means the RTLD_NOLOAD flag is diff --git a/elf/rtld.c b/elf/rtld.c index 55b84c3bf4..5b7eabcb85 100644 --- a/elf/rtld.c +++ b/elf/rtld.c @@ -588,7 +588,6 @@ struct map_args /* Argument to map_doit. */ char *str; struct link_map *loader; - int is_preloaded; int mode; /* Return value of map_doit. */ struct link_map *map; @@ -626,16 +625,17 @@ static void map_doit (void *a) { struct map_args *args = (struct map_args *) a; - args->map = _dl_map_object (args->loader, args->str, - args->is_preloaded, lt_library, 0, args->mode, - LM_ID_BASE); + args->map = _dl_map_object (args->loader, args->str, lt_library, 0, + args->mode, LM_ID_BASE); } static void dlmopen_doit (void *a) { struct dlmopen_args *args = (struct dlmopen_args *) a; - args->map = _dl_open (args->fname, RTLD_LAZY | __RTLD_DLOPEN | __RTLD_AUDIT, + args->map = _dl_open (args->fname, + (RTLD_LAZY | __RTLD_DLOPEN | __RTLD_AUDIT + | __RTLD_SECURE), dl_main, LM_ID_NEWLM, _dl_argc, INTUSE(_dl_argv), __environ); } @@ -805,8 +805,7 @@ do_preload (char *fname, struct link_map *main_map, const char *where) args.str = fname; args.loader = main_map; - args.is_preloaded = 1; - args.mode = 0; + args.mode = __RTLD_SECURE; unsigned int old_nloaded = GL(dl_ns)[LM_ID_BASE]._ns_nloaded; @@ -1052,7 +1051,6 @@ of this helper program; chances are you did not intend to run this program.\n\ args.str = rtld_progname; args.loader = NULL; - args.is_preloaded = 0; args.mode = __RTLD_OPENEXEC; (void) _dl_catch_error (&objname, &err_str, &malloced, map_doit, &args); @@ -1064,7 +1062,7 @@ of this helper program; chances are you did not intend to run this program.\n\ else { HP_TIMING_NOW (start); - _dl_map_object (NULL, rtld_progname, 0, lt_library, 0, + _dl_map_object (NULL, rtld_progname, lt_library, 0, __RTLD_OPENEXEC, LM_ID_BASE); HP_TIMING_NOW (stop); |