The packet filter checks required states for the incoming packets and
reject them if they arrived in the wrong state.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
When a SSH2_MSG_OPEN_FAILURE arrives, the channel state is checked
to be in SSH_CHANNEL_STATE_OPENING.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
When a SSH2_MSG_OPEN_CONFIRMATION arrives, the channel state is checked
to be in SSH_CHANNEL_STATE_OPENING.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
After sending the client token, the auth state is set as
SSH_AUTH_STATE_GSSAPI_MIC_SENT. Then this can be expected to be the
state when a USERAUTH_FAILURE or USERAUTH_SUCCESS arrives.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
The introduced auth state allows to identify when a request without
authentication information was sent.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
The introduced auth state allows to identify when authentication using
password was tried.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Introduced the states SSH_AUTH_STATE_PUBKEY_OFFER_SENT and
SSH_AUTH_STATE_PUBKEY_AUTH_SENT to know when SSH2_MSG_USERAUTH_PK_OK and
SSH2_MSG_USERAUTH_SUCCESS should be expected.
Fixes T101
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
Fixes invalid read introduced by commit 21962d.
Accessing tokens[4] for a known_hosts line of
three tokens led to randomly rejected host keys.
This commit completely removes the check because
the optional comments field may contain whitespace.
Signed-off-by: Tilo Eckert <tilo.eckert@flam.de>
(cherry picked from commit 45058285fc)
The added frees are unnecessary, but the static analyser does not know.
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 6eef4b4a3c)
Ensure sftp_server_new allocates the packet and payload as
sftp_packet_read now expects the packet and payload to be
pre-allocated.
Similarly, ensure sftp_get_client_message does not free the packet.
Signed-off-by: Alberto Aguirre <albaguirre@gmail.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
(cherry picked from commit 14f5624ff5)
The code for calculating SHA 512 in ssh_make_sessionid() had been
duplicated; the cases were unified.
Signed-off-by: Anderson Toshiyuki Sasaki <ansasaki@redhat.com>
(cherry picked from commit 0eab270754)
Summary:
buffer variable 's' gets unpacked as char**, the previous code was passing
a char* causing segfaults on all readlink calls inside the unpacking code
Test Plan:
- without patchy examples/samplesftp segfaults in readlink
- with patchy it doesn't
Reviewers: asn
Differential Revision: https://bugs.libssh.org/D14
Signed-off-by: Harald Sitter <sitter@kde.org>
(cherry picked from commit 97cb302c0e)
