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openssh/openssh-6.6p1-audit3-key_auth_usage-fips.patch

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Accepting request 230097 from home:pcerny:factory - Update of the underlying OpenSSH to 6.6p1 - update to 6.6p1 Security: * sshd(8): when using environment passing with a sshd_config(5) AcceptEnv pattern with a wildcard. OpenSSH prior to 6.6 could be tricked into accepting any enviornment variable that contains the characters before the wildcard character. Features since 6.5p1: * ssh(1), sshd(8): removal of the J-PAKE authentication code, which was experimental, never enabled and has been unmaintained for some time. * ssh(1): skip 'exec' clauses other clauses predicates failed to match while processing Match blocks. * ssh(1): if hostname canonicalisation is enabled and results in the destination hostname being changed, then re-parse ssh_config(5) files using the new destination hostname. This gives 'Host' and 'Match' directives that use the expanded hostname a chance to be applied. Bugfixes: * ssh(1): avoid spurious "getsockname failed: Bad file descriptor" in ssh -W. bz#2200, debian#738692 * sshd(8): allow the shutdown(2) syscall in seccomp-bpf and systrace sandbox modes, as it is reachable if the connection is terminated during the pre-auth phase. * ssh(1), sshd(8): fix unsigned overflow that in SSH protocol 1 bignum parsing. Minimum key length checks render this bug unexploitable to compromise SSH 1 sessions. * sshd_config(5): clarify behaviour of a keyword that appears in multiple matching Match blocks. bz#2184 OBS-URL: https://build.opensuse.org/request/show/230097 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=76
2014-04-14 23:53:01 +02:00
# HG changeset patch
Accepting request 231427 from home:pcerny:factory - curve25519 key exchange fix (-curve25519-6.6.1p1.patch) - patch re-ordering (-audit3-key_auth_usage-fips.patch, -audit4-kex_results-fips.patch) OBS-URL: https://build.opensuse.org/request/show/231427 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=80
2014-04-25 15:11:58 +02:00
# Parent 5482d21e8bd06309af51dea77a5f3668859fb2a0
Accepting request 230097 from home:pcerny:factory - Update of the underlying OpenSSH to 6.6p1 - update to 6.6p1 Security: * sshd(8): when using environment passing with a sshd_config(5) AcceptEnv pattern with a wildcard. OpenSSH prior to 6.6 could be tricked into accepting any enviornment variable that contains the characters before the wildcard character. Features since 6.5p1: * ssh(1), sshd(8): removal of the J-PAKE authentication code, which was experimental, never enabled and has been unmaintained for some time. * ssh(1): skip 'exec' clauses other clauses predicates failed to match while processing Match blocks. * ssh(1): if hostname canonicalisation is enabled and results in the destination hostname being changed, then re-parse ssh_config(5) files using the new destination hostname. This gives 'Host' and 'Match' directives that use the expanded hostname a chance to be applied. Bugfixes: * ssh(1): avoid spurious "getsockname failed: Bad file descriptor" in ssh -W. bz#2200, debian#738692 * sshd(8): allow the shutdown(2) syscall in seccomp-bpf and systrace sandbox modes, as it is reachable if the connection is terminated during the pre-auth phase. * ssh(1), sshd(8): fix unsigned overflow that in SSH protocol 1 bignum parsing. Minimum key length checks render this bug unexploitable to compromise SSH 1 sessions. * sshd_config(5): clarify behaviour of a keyword that appears in multiple matching Match blocks. bz#2184 OBS-URL: https://build.opensuse.org/request/show/230097 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=76
2014-04-14 23:53:01 +02:00
diff --git a/openssh-6.6p1/auth-rsa.c b/openssh-6.6p1/auth-rsa.c
--- a/openssh-6.6p1/auth-rsa.c
+++ b/openssh-6.6p1/auth-rsa.c
@@ -94,16 +94,20 @@ int
auth_rsa_verify_response(Key *key, BIGNUM *challenge,
u_char response[SSH_DIGEST_MAX_LENGTH])
{
u_char buf[2 * SSH_DIGEST_MAX_LENGTH], mdbuf[SSH_DIGEST_MAX_LENGTH];
struct ssh_digest_ctx *md;
int len;
Accepting request 231427 from home:pcerny:factory - curve25519 key exchange fix (-curve25519-6.6.1p1.patch) - patch re-ordering (-audit3-key_auth_usage-fips.patch, -audit4-kex_results-fips.patch) OBS-URL: https://build.opensuse.org/request/show/231427 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=80
2014-04-25 15:11:58 +02:00
int dgst;
Accepting request 230097 from home:pcerny:factory - Update of the underlying OpenSSH to 6.6p1 - update to 6.6p1 Security: * sshd(8): when using environment passing with a sshd_config(5) AcceptEnv pattern with a wildcard. OpenSSH prior to 6.6 could be tricked into accepting any enviornment variable that contains the characters before the wildcard character. Features since 6.5p1: * ssh(1), sshd(8): removal of the J-PAKE authentication code, which was experimental, never enabled and has been unmaintained for some time. * ssh(1): skip 'exec' clauses other clauses predicates failed to match while processing Match blocks. * ssh(1): if hostname canonicalisation is enabled and results in the destination hostname being changed, then re-parse ssh_config(5) files using the new destination hostname. This gives 'Host' and 'Match' directives that use the expanded hostname a chance to be applied. Bugfixes: * ssh(1): avoid spurious "getsockname failed: Bad file descriptor" in ssh -W. bz#2200, debian#738692 * sshd(8): allow the shutdown(2) syscall in seccomp-bpf and systrace sandbox modes, as it is reachable if the connection is terminated during the pre-auth phase. * ssh(1), sshd(8): fix unsigned overflow that in SSH protocol 1 bignum parsing. Minimum key length checks render this bug unexploitable to compromise SSH 1 sessions. * sshd_config(5): clarify behaviour of a keyword that appears in multiple matching Match blocks. bz#2184 OBS-URL: https://build.opensuse.org/request/show/230097 OBS-URL: https://build.opensuse.org/package/show/network/openssh?expand=0&rev=76
2014-04-14 23:53:01 +02:00
size_t dgst_len;
+ int rv;
+#ifdef SSH_AUDIT_EVENTS
+ char *fp;
+#endif
/* don't allow short keys */
if (BN_num_bits(key->rsa->n) < SSH_RSA_MINIMUM_MODULUS_SIZE) {
error("%s: RSA modulus too small: %d < minimum %d bits",
__func__,
BN_num_bits(key->rsa->n), SSH_RSA_MINIMUM_MODULUS_SIZE);
return (0);
}
@@ -121,22 +125,28 @@ auth_rsa_verify_response(Key *key, BIGNU
if ((md = ssh_digest_start(dgst)) == NULL ||
ssh_digest_update(md, buf, 2 * dgst_len) < 0 ||
ssh_digest_update(md, session_id, dgst_len) < 0 ||
ssh_digest_final(md, mdbuf, sizeof(mdbuf)) < 0)
fatal("%s: md5 failed", __func__);
ssh_digest_free(md);
/* Verify that the response is the original challenge. */
- if (timingsafe_bcmp(response, mdbuf, dgst_len) != 0) {
- /* Wrong answer. */
- return (0);
+ rv = timingsafe_bcmp(response, mdbuf, dgst_len) == 0;
+
+#ifdef SSH_AUDIT_EVENTS
+ fp = key_fingerprint(key, key_fp_type_select(), SSH_FP_HEX);
+ if (audit_keyusage(1, "ssh-rsa1", RSA_size(key->rsa) * 8, fp, rv) == 0) {
+ debug("unsuccessful audit");
+ rv = 0;
}
- /* Correct answer. */
- return (1);
+ free(fp);
+#endif
+
+ return rv;
}
/*
* Performs the RSA authentication challenge-response dialog with the client,
* and returns true (non-zero) if the client gave the correct answer to
* our challenge; returns zero if the client gives a wrong answer.
*/
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