diff options
| author | Hyunchul Lee <hyc.lee@gmail.com> | 2021-09-25 00:06:16 +0900 |
|---|---|---|
| committer | Steve French <stfrench@microsoft.com> | 2021-09-24 21:25:23 -0500 |
| commit | 265fd1991c1db85fbabaad4946ca0e63e2ae688d (patch) | |
| tree | f243e175b7a357f16b0b8494268c2b1e82996d21 /fs/ksmbd/misc.h | |
| parent | 4ea477988c423a57241ea4840b12832de6fabdfd (diff) | |
ksmbd: use LOOKUP_BENEATH to prevent the out of share access
instead of removing '..' in a given path, call
kern_path with LOOKUP_BENEATH flag to prevent
the out of share access.
ran various test on this:
smb2-cat-async smb://127.0.0.1/homes/../out_of_share
smb2-cat-async smb://127.0.0.1/homes/foo/../../out_of_share
smbclient //127.0.0.1/homes -c "mkdir ../foo2"
smbclient //127.0.0.1/homes -c "rename bar ../bar"
Cc: Ronnie Sahlberg <ronniesahlberg@gmail.com>
Cc: Ralph Boehme <slow@samba.org>
Tested-by: Steve French <smfrench@gmail.com>
Tested-by: Namjae Jeon <linkinjeon@kernel.org>
Acked-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/ksmbd/misc.h')
| -rw-r--r-- | fs/ksmbd/misc.h | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/fs/ksmbd/misc.h b/fs/ksmbd/misc.h index b7b10139ada2..253366bd0951 100644 --- a/fs/ksmbd/misc.h +++ b/fs/ksmbd/misc.h @@ -14,12 +14,13 @@ struct ksmbd_file; int match_pattern(const char *str, size_t len, const char *pattern); int ksmbd_validate_filename(char *filename); int parse_stream_name(char *filename, char **stream_name, int *s_type); -char *convert_to_nt_pathname(char *filename, char *sharepath); +char *convert_to_nt_pathname(char *filename); int get_nlink(struct kstat *st); -char *ksmbd_conv_path_to_unix(char *path); +void ksmbd_conv_path_to_unix(char *path); +void ksmbd_strip_last_slash(char *path); void ksmbd_conv_path_to_windows(char *path); char *ksmbd_extract_sharename(char *treename); -char *convert_to_unix_name(struct ksmbd_share_config *share, char *name); +char *convert_to_unix_name(struct ksmbd_share_config *share, const char *name); #define KSMBD_DIR_INFO_ALIGNMENT 8 struct ksmbd_dir_info; |