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* file.c (path_check_0): disallow sticky world writable directory

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in PATH (and $LOAD_PATH).  [ruby-dev:27226]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@9255 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
matz 2005-09-20 17:44:57 +00:00
parent db824a34dd
commit cca26c2226
2 changed files with 26 additions and 9 deletions
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30
file.c
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@ -3850,11 +3850,12 @@ is_absolute_path(path)
#ifndef DOSISH
static int
path_check_1(path)
VALUE path;
path_check_0(fpath, loadpath)
VALUE fpath;
int loadpath;
{
struct stat st;
char *p0 = StringValueCStr(path);
char *p0 = StringValueCStr(fpath);
char *p = 0, *s;
if (!is_absolute_path(p0)) {
@ -3866,7 +3867,7 @@ path_check_1(path)
rb_str_cat2(newpath, "/");
rb_str_cat2(newpath, p0);
return path_check_1(newpath);
return path_check_0(newpath, loadpath);
}
for (;;) {
#ifndef S_IWOTH
@ -3874,7 +3875,7 @@ path_check_1(path)
#endif
if (stat(p0, &st) == 0 && S_ISDIR(st.st_mode) && (st.st_mode & S_IWOTH)
#ifdef S_ISVTX
&& !(st.st_mode & S_ISVTX)
&& (loadpath || !(st.st_mode & S_ISVTX))
#endif
) {
rb_warn("Insecure world writable dir %s, mode 0%o", p0, st.st_mode);
@ -3890,6 +3891,17 @@ path_check_1(path)
}
#endif
static int
fpath_check(path)
char *path;
{
#ifndef DOSISH
return path_check_0(path, Qfalse);
#else
return 1;
#endif
}
int
rb_path_check(path)
char *path;
@ -3906,7 +3918,7 @@ rb_path_check(path)
if (!p) p = pend;
for (;;) {
if (!path_check_1(rb_str_new(p0, p - p0))) {
if (!path_check_0(rb_str_new(p0, p - p0), Qtrue)) {
return 0; /* not safe */
}
p0 = p + 1;
@ -4018,7 +4030,7 @@ rb_find_file(path)
#if defined(__MACOS__) || defined(riscos)
if (is_macos_native_path(f)) {
if (rb_safe_level() >= 1 && !rb_path_check(f)) {
if (rb_safe_level() >= 1 && !fpath_check(f)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
if (file_load_ok(f)) return path;
@ -4026,7 +4038,7 @@ rb_find_file(path)
#endif
if (is_absolute_path(f)) {
if (rb_safe_level() >= 1 && !rb_path_check(f)) {
if (rb_safe_level() >= 1 && !fpath_check(f)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
if (file_load_ok(f)) return path;
@ -4067,7 +4079,7 @@ rb_find_file(path)
return 0; /* no path, no load */
}
f = dln_find_file(f, lpath);
if (rb_safe_level() >= 1 && !rb_path_check(f)) {
if (rb_safe_level() >= 1 && !fpath_check(f)) {
rb_raise(rb_eSecurityError, "loading from unsafe file %s", f);
}
if (file_load_ok(f)) {