mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-23 15:32:33 +00:00
65256aee23
- update dropbear to latest stable 2022.82; for the changes see https://matt.ucc.asn.au/dropbear/CHANGES - use $(AUTORELEASE) in PKG_RELEASE - use https for all uris - refresh all patches - rewrite patches: - 100-pubkey_path.patch - 130-ssh_ignore_x_args.patch binary/pkg size changes: - ath79/generic, mips: - binary: 215112 -> 219228 (+4116) - pkg: 111914 -> 113404 (+1490) - ath79/tiny, mips: - binary: 172501 -> 172485 (-16) - pkg: 89871 -> 90904 (+1033) Tested-by: Stijn Segers <foss@volatilesystems.org> Signed-off-by: Konstantin Demin <rockdrilla@gmail.com>
107 lines
3.7 KiB
Diff
107 lines
3.7 KiB
Diff
--- a/svr-authpubkey.c
|
|
+++ b/svr-authpubkey.c
|
|
@@ -77,6 +77,13 @@ static void send_msg_userauth_pk_ok(cons
|
|
const unsigned char* keyblob, unsigned int keybloblen);
|
|
static int checkfileperm(char * filename);
|
|
|
|
+static const char * const global_authkeys_dir = "/etc/dropbear";
|
|
+static const int n_global_authkeys_dir = 14; /* + 1 extra byte */
|
|
+static const char * const user_authkeys_dir = ".ssh";
|
|
+static const int n_user_authkeys_dir = 5; /* + 1 extra byte */
|
|
+static const char * const authkeys_file = "authorized_keys";
|
|
+static const int n_authkeys_file = 16; /* + 1 extra byte */
|
|
+
|
|
/* process a pubkey auth request, sending success or failure message as
|
|
* appropriate */
|
|
void svr_auth_pubkey(int valid_user) {
|
|
@@ -439,14 +446,21 @@ static int checkpubkey(const char* keyal
|
|
if (checkpubkeyperms() == DROPBEAR_FAILURE) {
|
|
TRACE(("bad authorized_keys permissions, or file doesn't exist"))
|
|
} else {
|
|
- /* we don't need to check pw and pw_dir for validity, since
|
|
- * its been done in checkpubkeyperms. */
|
|
- len = strlen(ses.authstate.pw_dir);
|
|
- /* allocate max required pathname storage,
|
|
- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
|
|
- filename = m_malloc(len + 22);
|
|
- snprintf(filename, len + 22, "%s/.ssh/authorized_keys",
|
|
- ses.authstate.pw_dir);
|
|
+ if (ses.authstate.pw_uid == 0) {
|
|
+ len = n_global_authkeys_dir + n_authkeys_file;
|
|
+ filename = m_malloc(len);
|
|
+ snprintf(filename, len, "%s/%s", global_authkeys_dir, authkeys_file);
|
|
+ } else {
|
|
+ /* we don't need to check pw and pw_dir for validity, since
|
|
+ * its been done in checkpubkeyperms. */
|
|
+ len = strlen(ses.authstate.pw_dir);
|
|
+ /* allocate max required pathname storage,
|
|
+ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
|
|
+ len += n_user_authkeys_dir + n_authkeys_file + 1;
|
|
+ filename = m_malloc(len);
|
|
+ snprintf(filename, len, "%s/%s/%s", ses.authstate.pw_dir,
|
|
+ user_authkeys_dir, authkeys_file);
|
|
+ }
|
|
|
|
authfile = fopen(filename, "r");
|
|
if (!authfile) {
|
|
@@ -520,27 +534,41 @@ static int checkpubkeyperms() {
|
|
goto out;
|
|
}
|
|
|
|
- /* allocate max required pathname storage,
|
|
- * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
|
|
- len += 22;
|
|
- filename = m_malloc(len);
|
|
- strlcpy(filename, ses.authstate.pw_dir, len);
|
|
+ if (ses.authstate.pw_uid == 0) {
|
|
+ if (checkfileperm(global_authkeys_dir) != DROPBEAR_SUCCESS) {
|
|
+ goto out;
|
|
+ }
|
|
|
|
- /* check ~ */
|
|
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
- goto out;
|
|
- }
|
|
+ len = n_global_authkeys_dir + n_authkeys_file;
|
|
+ filename = m_malloc(len);
|
|
|
|
- /* check ~/.ssh */
|
|
- strlcat(filename, "/.ssh", len);
|
|
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
- goto out;
|
|
- }
|
|
+ snprintf(filename, len, "%s/%s", global_authkeys_dir, authkeys_file);
|
|
+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
+ goto out;
|
|
+ }
|
|
+ } else {
|
|
+ /* check ~ */
|
|
+ if (checkfileperm(ses.authstate.pw_dir) != DROPBEAR_SUCCESS) {
|
|
+ goto out;
|
|
+ }
|
|
|
|
- /* now check ~/.ssh/authorized_keys */
|
|
- strlcat(filename, "/authorized_keys", len);
|
|
- if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
- goto out;
|
|
+ /* allocate max required pathname storage,
|
|
+ * = path + "/.ssh/authorized_keys" + '\0' = pathlen + 22 */
|
|
+ len += n_user_authkeys_dir + n_authkeys_file + 1;
|
|
+ filename = m_malloc(len);
|
|
+
|
|
+ /* check ~/.ssh */
|
|
+ snprintf(filename, len, "%s/%s", ses.authstate.pw_dir, user_authkeys_dir);
|
|
+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
+ goto out;
|
|
+ }
|
|
+
|
|
+ /* now check ~/.ssh/authorized_keys */
|
|
+ snprintf(filename, len, "%s/%s/%s", ses.authstate.pw_dir,
|
|
+ user_authkeys_dir, authkeys_file);
|
|
+ if (checkfileperm(filename) != DROPBEAR_SUCCESS) {
|
|
+ goto out;
|
|
+ }
|
|
}
|
|
|
|
/* file looks ok, return success */
|