diff options
Diffstat (limited to 'backport-openssh-7.7p1-fips.patch')
-rw-r--r-- | backport-openssh-7.7p1-fips.patch | 466 |
1 files changed, 466 insertions, 0 deletions
diff --git a/backport-openssh-7.7p1-fips.patch b/backport-openssh-7.7p1-fips.patch new file mode 100644 index 0000000..3661818 --- /dev/null +++ b/backport-openssh-7.7p1-fips.patch @@ -0,0 +1,466 @@ +diff -up openssh-8.6p1/cipher-ctr.c.fips openssh-8.6p1/cipher-ctr.c +--- openssh-8.6p1/cipher-ctr.c.fips 2021-04-19 16:53:02.994577324 +0200 ++++ openssh-8.6p1/cipher-ctr.c 2021-04-19 16:53:03.064577862 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -179,7 +179,8 @@ evp_aes_128_ctr(void) + aes_ctr.do_cipher = ssh_aes_ctr; + #ifndef SSH_OLD_EVP + aes_ctr.flags = EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | +- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV; ++ EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CUSTOM_IV | ++ EVP_CIPH_FLAG_FIPS; + #endif + return (&aes_ctr); + } +diff -up openssh-8.6p1/dh.c.fips openssh-8.6p1/dh.c +--- openssh-8.6p1/dh.c.fips 2021-04-16 05:55:25.000000000 +0200 ++++ openssh-8.6p1/dh.c 2021-04-19 16:58:47.750263410 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -164,6 +164,12 @@ choose_dh(int min, int wantbits, int max + int best, bestcount, which, linenum; + struct dhgroup dhg; + ++ if (FIPS_mode()) { ++ logit("Using arbitrary primes is not allowed in FIPS mode." ++ " Falling back to known groups."); ++ return (dh_new_group_fallback(max)); ++ } ++ + if ((f = fopen(get_moduli_filename(), "r")) == NULL) { + logit("WARNING: could not open %s (%s), using fixed modulus", + get_moduli_filename(), strerror(errno)); +@@ -502,4 +508,38 @@ dh_estimate(int bits) + return 8192; + } + ++/* ++ * Compares the received DH parameters with known-good groups, ++ * which might be either from group14, group16 or group18. ++ */ ++int ++dh_is_known_group(const DH *dh) ++{ ++ const BIGNUM *p, *g; ++ const BIGNUM *known_p, *known_g; ++ DH *known = NULL; ++ int bits = 0, rv = 0; ++ ++ DH_get0_pqg(dh, &p, NULL, &g); ++ bits = BN_num_bits(p); ++ ++ if (bits <= 3072) { ++ known = dh_new_group14(); ++ } else if (bits <= 6144) { ++ known = dh_new_group16(); ++ } else { ++ known = dh_new_group18(); ++ } ++ ++ DH_get0_pqg(known, &known_p, NULL, &known_g); ++ ++ if (BN_cmp(g, known_g) == 0 && ++ BN_cmp(p, known_p) == 0) { ++ rv = 1; ++ } ++ ++ DH_free(known); ++ return rv; ++} ++ + #endif /* WITH_OPENSSL */ +diff -up openssh-8.6p1/dh.h.fips openssh-8.6p1/dh.h +--- openssh-8.6p1/dh.h.fips 2021-04-19 16:53:03.064577862 +0200 ++++ openssh-8.6p1/dh.h 2021-04-19 16:59:31.951616078 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -45,6 +45,7 @@ DH *dh_new_group_fallback(int); + + int dh_gen_key(DH *, int); + int dh_pub_is_valid(const DH *, const BIGNUM *); ++int dh_is_known_group(const DH *); + + u_int dh_estimate(int); + void dh_set_moduli_file(const char *); +diff -up openssh-8.6p1/kex.c.fips openssh-8.6p1/kex.c +--- openssh-8.6p1/kex.c.fips 2021-04-19 16:53:03.058577815 +0200 ++++ openssh-8.6p1/kex.c 2021-04-19 16:53:03.065577869 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -203,7 +203,10 @@ kex_names_valid(const char *names) + for ((p = strsep(&cp, ",")); p && *p != '\0'; + (p = strsep(&cp, ","))) { + if (kex_alg_by_name(p) == NULL) { +- error("Unsupported KEX algorithm \"%.100s\"", p); ++ if (FIPS_mode()) ++ error("\"%.100s\" is not allowed in FIPS mode", p); ++ else ++ error("Unsupported KEX algorithm \"%.100s\"", p); + free(s); + return 0; + } +diff -up openssh-8.6p1/kexgexc.c.fips openssh-8.6p1/kexgexc.c +--- openssh-8.6p1/kexgexc.c.fips 2021-04-16 05:55:25.000000000 +0200 ++++ openssh-8.6p1/kexgexc.c 2021-04-19 16:53:03.065577869 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -28,6 +28,7 @@ + + #ifdef WITH_OPENSSL + ++#include <openssl/crypto.h> + #include <sys/types.h> + + #include <openssl/dh.h> +@@ -115,6 +116,10 @@ input_kex_dh_gex_group(int type, u_int32 + r = SSH_ERR_ALLOC_FAIL; + goto out; + } ++ if (FIPS_mode() && dh_is_known_group(kex->dh) == 0) { ++ r = SSH_ERR_INVALID_ARGUMENT; ++ goto out; ++ } + p = g = NULL; /* belong to kex->dh now */ + + /* generate and send 'e', client DH public key */ +diff -up openssh-8.6p1/myproposal.h.fips openssh-8.6p1/myproposal.h +--- openssh-8.6p1/myproposal.h.fips 2021-04-16 05:55:25.000000000 +0200 ++++ openssh-8.6p1/myproposal.h 2021-04-19 16:53:03.065577869 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -57,6 +57,18 @@ + "rsa-sha2-512," \ + "rsa-sha2-256" + ++#define KEX_FIPS_PK_ALG \ ++ "ecdsa-sha2-nistp256-cert-v01@openssh.com," \ ++ "ecdsa-sha2-nistp384-cert-v01@openssh.com," \ ++ "ecdsa-sha2-nistp521-cert-v01@openssh.com," \ ++ "rsa-sha2-512-cert-v01@openssh.com," \ ++ "rsa-sha2-256-cert-v01@openssh.com," \ ++ "ecdsa-sha2-nistp256," \ ++ "ecdsa-sha2-nistp384," \ ++ "ecdsa-sha2-nistp521," \ ++ "rsa-sha2-512," \ ++ "rsa-sha2-256," \ ++ + #define KEX_SERVER_ENCRYPT \ + "chacha20-poly1305@openssh.com," \ + "aes128-ctr,aes192-ctr,aes256-ctr," \ +@@ -78,6 +92,27 @@ + + #define KEX_CLIENT_MAC KEX_SERVER_MAC + ++#define KEX_FIPS_ENCRYPT \ ++ "aes128-ctr,aes192-ctr,aes256-ctr," \ ++ "aes128-cbc,3des-cbc," \ ++ "aes192-cbc,aes256-cbc,rijndael-cbc@lysator.liu.se," \ ++ "aes128-gcm@openssh.com,aes256-gcm@openssh.com" ++#define KEX_DEFAULT_KEX_FIPS \ ++ "ecdh-sha2-nistp256," \ ++ "ecdh-sha2-nistp384," \ ++ "ecdh-sha2-nistp521," \ ++ "diffie-hellman-group-exchange-sha256," \ ++ "diffie-hellman-group16-sha512," \ ++ "diffie-hellman-group18-sha512," \ ++ "diffie-hellman-group14-sha256" ++#define KEX_FIPS_MAC \ ++ "hmac-sha1," \ ++ "hmac-sha2-256," \ ++ "hmac-sha2-512," \ ++ "hmac-sha1-etm@openssh.com," \ ++ "hmac-sha2-256-etm@openssh.com," \ ++ "hmac-sha2-512-etm@openssh.com" ++ + /* Not a KEX value, but here so all the algorithm defaults are together */ + #define SSH_ALLOWED_CA_SIGALGS \ + "ssh-ed25519," \ +diff -up openssh-8.6p1/readconf.c.fips openssh-8.6p1/readconf.c +--- openssh-8.6p1/readconf.c.fips 2021-04-19 16:53:02.999577362 +0200 ++++ openssh-8.6p1/readconf.c 2021-04-19 16:53:03.065577869 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -2538,11 +2538,16 @@ fill_default_options(Options * options) + all_key = sshkey_alg_list(0, 0, 1, ','); + all_sig = sshkey_alg_list(0, 1, 1, ','); + /* remove unsupported algos from default lists */ +- def_cipher = match_filter_allowlist(KEX_CLIENT_ENCRYPT, all_cipher); +- def_mac = match_filter_allowlist(KEX_CLIENT_MAC, all_mac); +- def_kex = match_filter_allowlist(KEX_CLIENT_KEX, all_kex); +- def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key); +- def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig); ++ def_cipher = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_ENCRYPT : KEX_CLIENT_ENCRYPT), all_cipher); ++ def_mac = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_MAC : KEX_CLIENT_MAC), all_mac); ++ def_kex = match_filter_allowlist((FIPS_mode() ? ++ KEX_DEFAULT_KEX_FIPS : KEX_CLIENT_KEX), all_kex); ++ def_key = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG), all_key); ++ def_sig = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_PK_ALG : SSH_ALLOWED_CA_SIGALGS), all_sig); + #define ASSEMBLE(what, defaults, all) \ + do { \ + if ((r = kex_assemble_names(&options->what, \ +diff -up openssh-8.6p1/sandbox-seccomp-filter.c.fips openssh-8.6p1/sandbox-seccomp-filter.c +--- openssh-8.6p1/sandbox-seccomp-filter.c.fips 2021-04-19 16:53:03.034577631 +0200 ++++ openssh-8.6p1/sandbox-seccomp-filter.c 2021-04-19 16:53:03.065577869 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -160,6 +160,9 @@ static const struct sock_filter preauth_ + #ifdef __NR_open + SC_DENY(__NR_open, EACCES), + #endif ++#ifdef __NR_socket ++ SC_DENY(__NR_socket, EACCES), ++#endif + #ifdef __NR_openat + SC_DENY(__NR_openat, EACCES), + #endif +diff -up openssh-8.6p1/servconf.c.fips openssh-8.6p1/servconf.c +--- openssh-8.6p1/servconf.c.fips 2021-04-19 16:53:03.027577577 +0200 ++++ openssh-8.6p1/servconf.c 2021-04-19 16:53:03.066577877 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -226,11 +226,16 @@ assemble_algorithms(ServerOptions *o) + all_key = sshkey_alg_list(0, 0, 1, ','); + all_sig = sshkey_alg_list(0, 1, 1, ','); + /* remove unsupported algos from default lists */ +- def_cipher = match_filter_allowlist(KEX_SERVER_ENCRYPT, all_cipher); +- def_mac = match_filter_allowlist(KEX_SERVER_MAC, all_mac); +- def_kex = match_filter_allowlist(KEX_SERVER_KEX, all_kex); +- def_key = match_filter_allowlist(KEX_DEFAULT_PK_ALG, all_key); +- def_sig = match_filter_allowlist(SSH_ALLOWED_CA_SIGALGS, all_sig); ++ def_cipher = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_ENCRYPT : KEX_SERVER_ENCRYPT), all_cipher); ++ def_mac = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_MAC : KEX_SERVER_MAC), all_mac); ++ def_kex = match_filter_allowlist((FIPS_mode() ? ++ KEX_DEFAULT_KEX_FIPS : KEX_SERVER_KEX), all_kex); ++ def_key = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_PK_ALG : KEX_DEFAULT_PK_ALG), all_key); ++ def_sig = match_filter_allowlist((FIPS_mode() ? ++ KEX_FIPS_PK_ALG : SSH_ALLOWED_CA_SIGALGS), all_sig); + #define ASSEMBLE(what, defaults, all) \ + do { \ + if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \ +diff -up openssh-8.6p1/ssh.c.fips openssh-8.6p1/ssh.c +--- openssh-8.6p1/ssh.c.fips 2021-04-19 16:53:03.038577662 +0200 ++++ openssh-8.6p1/ssh.c 2021-04-19 16:53:03.066577877 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -77,6 +77,7 @@ + #include <openssl/evp.h> + #include <openssl/err.h> + #endif ++#include <openssl/crypto.h> + #include "openbsd-compat/openssl-compat.h" + #include "openbsd-compat/sys-queue.h" + +@@ -1516,6 +1517,10 @@ main(int ac, char **av) + exit(0); + } + ++ if (FIPS_mode()) { ++ debug("FIPS mode initialized"); ++ } ++ + /* Expand SecurityKeyProvider if it refers to an environment variable */ + if (options.sk_provider != NULL && *options.sk_provider == '$' && + strlen(options.sk_provider) > 1) { +diff -up openssh-8.6p1/sshconnect2.c.fips openssh-8.6p1/sshconnect2.c +--- openssh-8.6p1/sshconnect2.c.fips 2021-04-19 16:53:03.055577792 +0200 ++++ openssh-8.6p1/sshconnect2.c 2021-04-19 16:53:03.066577877 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -45,6 +45,8 @@ + #include <vis.h> + #endif + ++#include <openssl/crypto.h> ++ + #include "openbsd-compat/sys-queue.h" + + #include "xmalloc.h" +@@ -269,36 +271,41 @@ ssh_kex2(struct ssh *ssh, char *host, st + + #if defined(GSSAPI) && defined(WITH_OPENSSL) + if (options.gss_keyex) { +- /* Add the GSSAPI mechanisms currently supported on this +- * client to the key exchange algorithm proposal */ +- orig = myproposal[PROPOSAL_KEX_ALGS]; +- +- if (options.gss_server_identity) { +- gss_host = xstrdup(options.gss_server_identity); +- } else if (options.gss_trust_dns) { +- gss_host = remote_hostname(ssh); +- /* Fall back to specified host if we are using proxy command +- * and can not use DNS on that socket */ +- if (strcmp(gss_host, "UNKNOWN") == 0) { +- free(gss_host); ++ if (FIPS_mode()) { ++ logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode"); ++ options.gss_keyex = 0; ++ } else { ++ /* Add the GSSAPI mechanisms currently supported on this ++ * client to the key exchange algorithm proposal */ ++ orig = myproposal[PROPOSAL_KEX_ALGS]; ++ ++ if (options.gss_server_identity) { ++ gss_host = xstrdup(options.gss_server_identity); ++ } else if (options.gss_trust_dns) { ++ gss_host = remote_hostname(ssh); ++ /* Fall back to specified host if we are using proxy command ++ * and can not use DNS on that socket */ ++ if (strcmp(gss_host, "UNKNOWN") == 0) { ++ free(gss_host); ++ gss_host = xstrdup(host); ++ } ++ } else { + gss_host = xstrdup(host); + } +- } else { +- gss_host = xstrdup(host); +- } + +- gss = ssh_gssapi_client_mechanisms(gss_host, +- options.gss_client_identity, options.gss_kex_algorithms); +- if (gss) { +- debug("Offering GSSAPI proposal: %s", gss); +- xasprintf(&myproposal[PROPOSAL_KEX_ALGS], +- "%s,%s", gss, orig); +- +- /* If we've got GSSAPI algorithms, then we also support the +- * 'null' hostkey, as a last resort */ +- orig = myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS]; +- xasprintf(&myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS], +- "%s,null", orig); ++ gss = ssh_gssapi_client_mechanisms(gss_host, ++ options.gss_client_identity, options.gss_kex_algorithms); ++ if (gss) { ++ debug("Offering GSSAPI proposal: %s", gss); ++ xasprintf(&myproposal[PROPOSAL_KEX_ALGS], ++ "%s,%s", gss, orig); ++ ++ /* If we've got GSSAPI algorithms, then we also support the ++ * 'null' hostkey, as a last resort */ ++ orig = myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS]; ++ xasprintf(&myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS], ++ "%s,null", orig); ++ } + } + } + #endif +diff -up openssh-8.6p1/sshd.c.fips openssh-8.6p1/sshd.c +--- openssh-8.6p1/sshd.c.fips 2021-04-19 16:53:03.060577831 +0200 ++++ openssh-8.6p1/sshd.c 2021-04-19 16:57:45.827769340 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -66,6 +66,7 @@ + #include <grp.h> + #include <pwd.h> + #include <signal.h> ++#include <syslog.h> + #include <stdarg.h> + #include <stdio.h> + #include <stdlib.h> +@@ -77,6 +78,7 @@ + #include <openssl/dh.h> + #include <openssl/bn.h> + #include <openssl/rand.h> ++#include <openssl/crypto.h> + #include "openbsd-compat/openssl-compat.h" + #endif + +@@ -1619,6 +1621,7 @@ main(int ac, char **av) + #endif + __progname = ssh_get_progname(av[0]); + ++ OpenSSL_add_all_algorithms(); + /* Save argv. Duplicate so setproctitle emulation doesn't clobber it */ + saved_argc = ac; + rexec_argc = ac; +@@ -2110,6 +2113,10 @@ main(int ac, char **av) + /* Reinitialize the log (because of the fork above). */ + log_init(__progname, options.log_level, options.log_facility, log_stderr); + ++ if (FIPS_mode()) { ++ debug("FIPS mode initialized"); ++ } ++ + /* + * Chdir to the root directory so that the current disk can be + * unmounted if desired. +@@ -2494,10 +2501,14 @@ do_ssh2_kex(struct ssh *ssh) + if (strlen(myproposal[PROPOSAL_SERVER_HOST_KEY_ALGS]) == 0) + orig = NULL; + +- if (options.gss_keyex) +- gss = ssh_gssapi_server_mechanisms(); +- else +- gss = NULL; ++ if (options.gss_keyex) { ++ if (FIPS_mode()) { ++ logit("Disabling GSSAPIKeyExchange. Not usable in FIPS mode"); ++ options.gss_keyex = 0; ++ } else { ++ gss = ssh_gssapi_server_mechanisms(); ++ } ++ } + + if (gss && orig) + xasprintf(&newstr, "%s,%s", gss, orig); +diff -up openssh-8.6p1/sshkey.c.fips openssh-8.6p1/sshkey.c +--- openssh-8.6p1/sshkey.c.fips 2021-04-19 16:53:03.061577838 +0200 ++++ openssh-8.6p1/sshkey.c 2021-04-19 16:53:03.067577885 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -34,6 +34,7 @@ + #include <openssl/evp.h> + #include <openssl/err.h> + #include <openssl/pem.h> ++#include <openssl/crypto.h> + #endif + + #include "crypto_api.h" +@@ -57,6 +58,7 @@ + #define SSHKEY_INTERNAL + #include "sshkey.h" + #include "match.h" ++#include "log.h" + #include "ssh-sk.h" + + #ifdef WITH_XMSS +@@ -1705,6 +1707,8 @@ rsa_generate_private_key(u_int bits, RSA + } + if (!BN_set_word(f4, RSA_F4) || + !RSA_generate_key_ex(private, bits, f4, NULL)) { ++ if (FIPS_mode()) ++ logit_f("the key length might be unsupported by FIPS mode approved key generation method"); + ret = SSH_ERR_LIBCRYPTO_ERROR; + goto out; + } +diff -up openssh-8.6p1/ssh-keygen.c.fips openssh-8.6p1/ssh-keygen.c +--- openssh-8.6p1/ssh-keygen.c.fips 2021-04-19 16:53:03.038577662 +0200 ++++ openssh-8.6p1/ssh-keygen.c 2021-04-19 16:53:03.068577892 +0200 +Reference:https://src.fedoraproject.org/rpms/openssh/blob/rawhide/f/backport-openssh-7.7p1-fips.patch +@@ -205,6 +205,12 @@ type_bits_valid(int type, const char *na + #endif + } + #ifdef WITH_OPENSSL ++ if (FIPS_mode()) { ++ if (type == KEY_DSA) ++ fatal("DSA keys are not allowed in FIPS mode"); ++ if (type == KEY_ED25519) ++ fatal("ED25519 keys are not allowed in FIPS mode"); ++ } + switch (type) { + case KEY_DSA: + if (*bitsp != 1024) +@@ -1098,9 +1104,17 @@ do_gen_all_hostkeys(struct passwd *pw) + first = 1; + printf("%s: generating new host keys: ", __progname); + } ++ type = sshkey_type_from_name(key_types[i].key_type); ++ ++ /* Skip the keys that are not supported in FIPS mode */ ++ if (FIPS_mode() && (type == KEY_DSA || type == KEY_ED25519)) { ++ logit("Skipping %s key in FIPS mode", ++ key_types[i].key_type_display); ++ goto next; ++ } ++ + printf("%s ", key_types[i].key_type_display); + fflush(stdout); +- type = sshkey_type_from_name(key_types[i].key_type); + if ((fd = mkstemp(prv_tmp)) == -1) { + error("Could not save your private key in %s: %s", + prv_tmp, strerror(errno)); |