kex: Use a len variable for length checks in ssh_packet_kexinit()
Fixes T188 Signed-off-by: Andreas Schneider <asn@cryptomilk.org> Reviewed-by: Jakub Jelen <jjelen@redhat.com>
Этот коммит содержится в:
родитель
815f874964
Коммит
be34ff967f
17
src/kex.c
17
src/kex.c
@ -334,6 +334,7 @@ SSH_PACKET_CALLBACK(ssh_packet_kexinit)
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char *strings[SSH_KEX_METHODS] = {0};
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char *rsa_sig_ext = NULL;
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int rc = SSH_ERROR;
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size_t len;
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uint8_t first_kex_packet_follows = 0;
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uint32_t kexinit_reserved = 0;
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@ -349,26 +350,26 @@ SSH_PACKET_CALLBACK(ssh_packet_kexinit)
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}
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if (server_kex) {
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rc = ssh_buffer_get_data(packet,session->next_crypto->client_kex.cookie, 16);
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if (rc != 16) {
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len = ssh_buffer_get_data(packet,session->next_crypto->client_kex.cookie, 16);
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if (len != 16) {
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ssh_set_error(session, SSH_FATAL, "ssh_packet_kexinit: no cookie in packet");
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goto error;
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}
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rc = ssh_hashbufin_add_cookie(session, session->next_crypto->client_kex.cookie);
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if (rc < 0) {
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len = ssh_hashbufin_add_cookie(session, session->next_crypto->client_kex.cookie);
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if (len < 0) {
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ssh_set_error(session, SSH_FATAL, "ssh_packet_kexinit: adding cookie failed");
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goto error;
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}
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} else {
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rc = ssh_buffer_get_data(packet,session->next_crypto->server_kex.cookie, 16);
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if (rc != 16) {
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len = ssh_buffer_get_data(packet,session->next_crypto->server_kex.cookie, 16);
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if (len != 16) {
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ssh_set_error(session, SSH_FATAL, "ssh_packet_kexinit: no cookie in packet");
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goto error;
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}
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rc = ssh_hashbufin_add_cookie(session, session->next_crypto->server_kex.cookie);
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if (rc < 0) {
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len = ssh_hashbufin_add_cookie(session, session->next_crypto->server_kex.cookie);
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if (len < 0) {
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ssh_set_error(session, SSH_FATAL, "ssh_packet_kexinit: adding cookie failed");
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goto error;
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}
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