Disable sntrup761x25519-sha512 in FIPS mode
Related: rhbz#2070628
This commit is contained in:
Dmitry Belyavskiy
parent
fd0d5a4f44
commit
32a82650cf
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@ -1,16 +1,3 @@
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diff -up openssh-8.6p1/cipher-ctr.c.fips openssh-8.6p1/cipher-ctr.c
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--- openssh-8.6p1/cipher-ctr.c.fips 2021-05-06 12:08:36.423926297 +0200
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+++ openssh-8.6p1/cipher-ctr.c 2021-05-06 12:08:36.497926869 +0200
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@@ -179,7 +179,8 @@ evp_aes_128_ctr(void)
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aes_ctr.do_cipher = ssh_aes_ctr;
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#ifndef SSH_OLD_EVP
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aes_ctr.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH |
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- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV;
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+ EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV |
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+ EVP_CIPH_FLAG_FIPS;
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#endif
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return (&aes_ctr);
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}
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diff -up openssh-8.6p1/dh.c.fips openssh-8.6p1/dh.c
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--- openssh-8.6p1/dh.c.fips 2021-04-16 05:55:25.000000000 +0200
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+++ openssh-8.6p1/dh.c 2021-05-06 12:12:10.107634472 +0200
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@ -117,7 +104,7 @@ diff -up openssh-8.6p1/kexgexc.c.fips openssh-8.6p1/kexgexc.c
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diff -up openssh-8.6p1/myproposal.h.fips openssh-8.6p1/myproposal.h
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--- openssh-8.6p1/myproposal.h.fips 2021-04-16 05:55:25.000000000 +0200
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+++ openssh-8.6p1/myproposal.h 2021-05-06 12:08:36.498926877 +0200
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@@ -57,6 +57,20 @@
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@@ -57,6 +57,18 @@
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"rsa-sha2-256," \
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"ssh-rsa"
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@ -127,13 +114,11 @@ diff -up openssh-8.6p1/myproposal.h.fips openssh-8.6p1/myproposal.h
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+ "ecdsa-sha2-nistp521-cert-v01@openssh.com," \
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+ "rsa-sha2-512-cert-v01@openssh.com," \
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+ "rsa-sha2-256-cert-v01@openssh.com," \
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+ "ssh-rsa-cert-v01@openssh.com," \
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+ "ecdsa-sha2-nistp256," \
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+ "ecdsa-sha2-nistp384," \
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+ "ecdsa-sha2-nistp521," \
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+ "rsa-sha2-512," \
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+ "rsa-sha2-256," \
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+ "ssh-rsa"
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+ "rsa-sha2-256"
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+
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#define KEX_SERVER_ENCRYPT \
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"chacha20-poly1305@openssh.com," \
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@ -452,3 +437,89 @@ diff -up openssh-8.6p1/ssh-keygen.c.fips openssh-8.6p1/ssh-keygen.c
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if ((fd = mkstemp(prv_tmp)) == -1) {
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error("Could not save your private key in %s: %s",
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prv_tmp, strerror(errno));
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diff -up openssh-8.7p1/kexgen.c.fips3 openssh-8.7p1/kexgen.c
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--- openssh-8.7p1/kexgen.c.fips3 2022-07-11 16:11:21.973519913 +0200
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+++ openssh-8.7p1/kexgen.c 2022-07-11 16:25:31.172187365 +0200
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@@ -31,6 +31,7 @@
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#include <stdio.h>
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#include <string.h>
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#include <signal.h>
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+#include <openssl/crypto.h>
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#include "sshkey.h"
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#include "kex.h"
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@@ -115,10 +116,20 @@ kex_gen_client(struct ssh *ssh)
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break;
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#endif
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case KEX_C25519_SHA256:
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- r = kex_c25519_keypair(kex);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type c25519 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_c25519_keypair(kex);
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+ }
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break;
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case KEX_KEM_SNTRUP761X25519_SHA512:
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- r = kex_kem_sntrup761x25519_keypair(kex);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type sntrup761 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_kem_sntrup761x25519_keypair(kex);
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+ }
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break;
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default:
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r = SSH_ERR_INVALID_ARGUMENT;
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@@ -186,11 +197,21 @@ input_kex_gen_reply(int type, u_int32_t
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break;
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#endif
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case KEX_C25519_SHA256:
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- r = kex_c25519_dec(kex, server_blob, &shared_secret);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type c25519 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_c25519_dec(kex, server_blob, &shared_secret);
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+ }
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break;
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case KEX_KEM_SNTRUP761X25519_SHA512:
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- r = kex_kem_sntrup761x25519_dec(kex, server_blob,
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- &shared_secret);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type sntrup761 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_kem_sntrup761x25519_dec(kex, server_blob,
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+ &shared_secret);
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+ }
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break;
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default:
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r = SSH_ERR_INVALID_ARGUMENT;
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@@ -285,12 +306,22 @@ input_kex_gen_init(int type, u_int32_t s
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break;
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#endif
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case KEX_C25519_SHA256:
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- r = kex_c25519_enc(kex, client_pubkey, &server_pubkey,
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- &shared_secret);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type c25519 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_c25519_enc(kex, client_pubkey, &server_pubkey,
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+ &shared_secret);
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+ }
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break;
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case KEX_KEM_SNTRUP761X25519_SHA512:
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- r = kex_kem_sntrup761x25519_enc(kex, client_pubkey,
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- &server_pubkey, &shared_secret);
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+ if (FIPS_mode()) {
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+ logit("Key exchange type sntrup761 is not alowed in FIPS mode");
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+ r = SSH_ERR_INVALID_ARGUMENT;
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+ } else {
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+ r = kex_kem_sntrup761x25519_enc(kex, client_pubkey,
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+ &server_pubkey, &shared_secret);
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+ }
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break;
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default:
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r = SSH_ERR_INVALID_ARGUMENT;
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@ -51,7 +51,7 @@
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# Do not forget to bump pam_ssh_agent_auth release if you rewind the main package release to 1
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%global openssh_ver 8.7p1
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%global openssh_rel 11
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%global openssh_rel 12
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%global pam_ssh_agent_ver 0.10.4
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%global pam_ssh_agent_rel 4
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@ -720,6 +720,10 @@ test -f %{sysconfig_anaconda} && \
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%endif
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%changelog
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* Mon Jul 11 2022 Dmitry Belyavskiy <dbelyavs@redhat.com> - 8.7p1-12
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- Disable sntrup761x25519-sha512 in FIPS mode
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Related: rhbz#2070628
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* Mon Jul 11 2022 Zoltan Fridrich <zfridric@redhat.com> - 8.7p1-11
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- Fix scp clearing file when src and dest are the same
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Resolves: rhbz#2056884
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