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CVE-2023-1667:dh: Expose the callback cleanup functions

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These will be helpful when we already sent the first key exchange packet, but we
found out that our guess was wrong and we need to initiate different key
exchange method with different callbacks.

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Norbert Pocs <npocs@redhat.com>
Reviewed-by: Andreas Schneider <asn@cryptomilk.org>
This commit is contained in:
Jakub Jelen
2023-03-17 14:05:01 +01:00
committed by Andreas Schneider
parent f455ffe8b8
commit cd0aa0bd91
9 changed files with 66 additions and 4 deletions
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7
src/curve25519.c
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@@ -172,6 +172,11 @@ int ssh_client_curve25519_init(ssh_session session)
return rc;
}
void ssh_client_curve25519_remove_callbacks(ssh_session session)
{
ssh_packet_remove_callbacks(session, &ssh_curve25519_client_callbacks);
}
static int ssh_curve25519_build_k(ssh_session session)
{
ssh_curve25519_pubkey k;
@@ -285,7 +290,7 @@ static SSH_PACKET_CALLBACK(ssh_packet_client_curve25519_reply){
(void)type;
(void)user;
ssh_packet_remove_callbacks(session, &ssh_curve25519_client_callbacks);
ssh_client_curve25519_remove_callbacks(session);
pubkey_blob = ssh_buffer_get_ssh_string(packet);
if (pubkey_blob == NULL) {