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Fix possible memory corruption (#14)

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Signed-off-by: Andreas Schneider <mail@cynapses.org>
This commit is contained in:
milo
2009-07-28 18:01:07 +02:00
committed by Andreas Schneider
parent 232aca8969
commit 74eff86a6b
7 changed files with 24 additions and 24 deletions
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2
libssh/agent.c
View File

@@ -327,7 +327,7 @@ int agent_get_ident_count(struct ssh_session *session) {
}
if (session->agent->ident) {
buffer_free(session->agent->ident);
buffer_reinit(session->agent->ident);
}
session->agent->ident = reply;

14
libssh/auth.c
View File

@@ -268,7 +268,7 @@ int ssh_userauth_none(SSH_SESSION *session, const char *username) {
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(service);
string_free(method);
string_free(user);
@@ -382,7 +382,7 @@ int ssh_userauth_offer_pubkey(SSH_SESSION *session, const char *username,
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(user);
string_free(method);
string_free(service);
@@ -503,7 +503,7 @@ int ssh_userauth_pubkey(SSH_SESSION *session, const char *username,
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(user);
string_free(service);
string_free(method);
@@ -627,7 +627,7 @@ int ssh_userauth_agent_pubkey(SSH_SESSION *session, const char *username,
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(sign);
string_free(user);
string_free(service);
@@ -739,7 +739,7 @@ int ssh_userauth_password(SSH_SESSION *session, const char *username,
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(user);
string_free(service);
string_free(method);
@@ -1123,7 +1123,7 @@ static int kbdauth_init(SSH_SESSION *session, const char *user,
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(usr);
string_free(service);
string_free(method);
@@ -1290,7 +1290,7 @@ static int kbdauth_send(SSH_SESSION *session) {
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_burn(answer);
string_free(answer);

10
libssh/channels.c
View File

@@ -280,7 +280,7 @@ static int grow_window(SSH_SESSION *session, CHANNEL *channel, int minimumsize)
leave_function();
return 0;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
leave_function();
return -1;
@@ -791,7 +791,7 @@ int channel_send_eof(CHANNEL *channel){
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
leave_function();
return rc;
@@ -844,7 +844,7 @@ int channel_close(CHANNEL *channel){
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
leave_function();
return rc;
@@ -938,7 +938,7 @@ int channel_write(CHANNEL *channel, const void *data, u32 len) {
leave_function();
return origlen;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
leave_function();
return SSH_ERROR;
@@ -1060,7 +1060,7 @@ static int channel_request(CHANNEL *channel, const char *request,
leave_function();
return rc;
error:
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(req);
leave_function();

10
libssh/dh.c
View File

@@ -626,20 +626,20 @@ int hashbufout_add_cookie(SSH_SESSION *session) {
}
if (buffer_add_u8(session->out_hashbuf, 20) < 0) {
buffer_free(session->out_hashbuf);
buffer_reinit(session->out_hashbuf);
return -1;
}
if (session->server) {
if (buffer_add_data(session->out_hashbuf,
session->server_kex.cookie, 16) < 0) {
buffer_free(session->out_hashbuf);
buffer_reinit(session->out_hashbuf);
return -1;
}
} else {
if (buffer_add_data(session->out_hashbuf,
session->client_kex.cookie, 16) < 0) {
buffer_free(session->out_hashbuf);
buffer_reinit(session->out_hashbuf);
return -1;
}
}
@@ -654,11 +654,11 @@ int hashbufin_add_cookie(SSH_SESSION *session, unsigned char *cookie) {
}
if (buffer_add_u8(session->in_hashbuf, 20) < 0) {
buffer_free(session->in_hashbuf);
buffer_reinit(session->in_hashbuf);
return -1;
}
if (buffer_add_data(session->in_hashbuf,cookie, 16) < 0) {
buffer_free(session->in_hashbuf);
buffer_reinit(session->in_hashbuf);
return -1;
}

4
libssh/kex.c
View File

@@ -421,8 +421,8 @@ int ssh_send_kex(SSH_SESSION *session, int server_kex) {
leave_function();
return 0;
error:
buffer_free(session->out_buffer);
buffer_free(session->out_hashbuf);
buffer_reinit(session->out_buffer);
buffer_reinit(session->out_hashbuf);
string_free(str);
leave_function();

4
libssh/server.c
View File

@@ -424,7 +424,7 @@ static int dh_handshake_server(SSH_SESSION *session) {
buffer_add_ssh_string(session->out_buffer, f) < 0 ||
buffer_add_ssh_string(session->out_buffer, sign) < 0) {
ssh_set_error(session, SSH_FATAL, "Not enough space");
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
string_free(f);
string_free(sign);
return -1;
@@ -437,7 +437,7 @@ static int dh_handshake_server(SSH_SESSION *session) {
}
if (buffer_add_u8(session->out_buffer, SSH2_MSG_NEWKEYS) < 0) {
buffer_free(session->out_buffer);
buffer_reinit(session->out_buffer);
return -1;
}

4
libssh/session.c
View File

@@ -97,8 +97,8 @@ void ssh_cleanup(SSH_SESSION *session) {
SAFE_FREE(session->serverbanner);
SAFE_FREE(session->clientbanner);
SAFE_FREE(session->banner);
buffer_free(session->in_buffer);
buffer_free(session->out_buffer);
buffer_reinit(session->in_buffer);
buffer_reinit(session->out_buffer);
crypto_free(session->current_crypto);
crypto_free(session->next_crypto);
ssh_socket_free(session->socket);