213 lines
7.3 KiB
Diff
213 lines
7.3 KiB
Diff
diff --git a/audit-bsm.c b/audit-bsm.c
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index 5160869..c7a1b47 100644
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--- a/audit-bsm.c
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+++ b/audit-bsm.c
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@@ -481,7 +481,7 @@ audit_unsupported_body(int what)
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}
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void
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-audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid, uid_t uid)
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+audit_kex_body(int ctos, char *enc, char *mac, char *compress, char *pfs, pid_t pid, uid_t uid)
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{
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/* not implemented */
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}
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diff --git a/audit-linux.c b/audit-linux.c
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index 6954fc1..6686f6a 100644
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--- a/audit-linux.c
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+++ b/audit-linux.c
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@@ -297,7 +297,7 @@ audit_unsupported_body(int what)
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const static char *direction[] = { "from-server", "from-client", "both" };
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void
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-audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid,
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+audit_kex_body(int ctos, char *enc, char *mac, char *compress, char *pfs, pid_t pid,
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uid_t uid)
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{
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#ifdef AUDIT_CRYPTO_SESSION
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@@ -306,8 +306,8 @@ audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid,
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Cipher *cipher = cipher_by_name(enc);
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char *s;
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- snprintf(buf, sizeof(buf), "op=start direction=%s cipher=%s ksize=%d mac=%s spid=%jd suid=%jd rport=%d laddr=%s lport=%d ",
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- direction[ctos], enc, cipher ? 8 * cipher->key_len : 0, mac,
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+ snprintf(buf, sizeof(buf), "op=start direction=%s cipher=%s ksize=%d mac=%s pfs=%s spid=%jd suid=%jd rport=%d laddr=%s lport=%d ",
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+ direction[ctos], enc, cipher ? 8 * cipher->key_len : 0, mac, pfs,
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(intmax_t)pid, (intmax_t)uid,
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get_remote_port(), (s = get_local_ipaddr(packet_get_connection_in())), get_local_port());
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free(s);
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diff --git a/audit.c b/audit.c
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index 13c6849..5b49434 100644
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--- a/audit.c
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+++ b/audit.c
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@@ -135,9 +135,9 @@ audit_unsupported(int what)
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}
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void
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-audit_kex(int ctos, char *enc, char *mac, char *comp)
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+audit_kex(int ctos, char *enc, char *mac, char *comp, char *pfs)
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{
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- PRIVSEP(audit_kex_body(ctos, enc, mac, comp, getpid(), getuid()));
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+ PRIVSEP(audit_kex_body(ctos, enc, mac, comp, pfs, getpid(), getuid()));
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}
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void
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@@ -270,11 +270,11 @@ audit_unsupported_body(int what)
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* This will be called on succesfull protocol negotiation.
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*/
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void
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-audit_kex_body(int ctos, char *enc, char *mac, char *compress, pid_t pid,
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+audit_kex_body(int ctos, char *enc, char *mac, char *compress, char *pfs, pid_t pid,
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uid_t uid)
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{
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- debug("audit protocol negotiation euid %d direction %d cipher %s mac %s compresion %s from pid %ld uid %u",
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- (unsigned)geteuid(), ctos, enc, mac, compress, (long)pid,
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+ debug("audit protocol negotiation euid %d direction %d cipher %s mac %s compresion %s pfs %s from pid %ld uid %u",
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+ (unsigned)geteuid(), ctos, enc, mac, compress, pfs, (long)pid,
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(unsigned)uid);
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}
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diff --git a/audit.h b/audit.h
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index a2dc3ff..903df66 100644
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--- a/audit.h
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+++ b/audit.h
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@@ -61,9 +61,9 @@ ssh_audit_event_t audit_classify_auth(const char *);
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int audit_keyusage(int, const char *, unsigned, char *, int);
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void audit_key(int, int *, const Key *);
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void audit_unsupported(int);
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-void audit_kex(int, char *, char *, char *);
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+void audit_kex(int, char *, char *, char *, char *);
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void audit_unsupported_body(int);
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-void audit_kex_body(int, char *, char *, char *, pid_t, uid_t);
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+void audit_kex_body(int, char *, char *, char *, char *, pid_t, uid_t);
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void audit_session_key_free(int ctos);
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void audit_session_key_free_body(int ctos, pid_t, uid_t);
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void audit_destroy_sensitive_data(const char *, pid_t, uid_t);
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diff --git a/auditstub.c b/auditstub.c
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index 45817e0..116f460 100644
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--- a/auditstub.c
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+++ b/auditstub.c
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@@ -35,7 +35,7 @@ audit_unsupported(int n)
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}
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void
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-audit_kex(int ctos, char *enc, char *mac, char *comp)
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+audit_kex(int ctos, char *enc, char *mac, char *comp, char *pfs)
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{
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}
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diff --git a/kex.c b/kex.c
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index ede7b67..eb5f333 100644
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--- a/kex.c
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+++ b/kex.c
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@@ -553,13 +553,12 @@ kex_choose_conf(Kex *kex)
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newkeys->enc.name,
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authlen == 0 ? newkeys->mac.name : "<implicit>",
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newkeys->comp.name);
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-#ifdef SSH_AUDIT_EVENTS
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- audit_kex(ctos, newkeys->enc.name, newkeys->mac.name, newkeys->comp.name);
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-#endif
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}
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+
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choose_kex(kex, cprop[PROPOSAL_KEX_ALGS], sprop[PROPOSAL_KEX_ALGS]);
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choose_hostkeyalg(kex, cprop[PROPOSAL_SERVER_HOST_KEY_ALGS],
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sprop[PROPOSAL_SERVER_HOST_KEY_ALGS]);
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+
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need = dh_need = 0;
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for (mode = 0; mode < MODE_MAX; mode++) {
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newkeys = kex->newkeys[mode];
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@@ -571,11 +570,16 @@ kex_choose_conf(Kex *kex)
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dh_need = MAX(dh_need, newkeys->enc.block_size);
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dh_need = MAX(dh_need, newkeys->enc.iv_len);
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dh_need = MAX(dh_need, newkeys->mac.key_len);
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+ debug("kex: %s need=%d dh_need=%d", kex->name, need, dh_need);
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+#ifdef SSH_AUDIT_EVENTS
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+ audit_kex(ctos, newkeys->enc.name, newkeys->mac.name, newkeys->comp.name, kex->name);
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+#endif
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}
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/* XXX need runden? */
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kex->we_need = need;
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kex->dh_need = dh_need;
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+
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/* ignore the next message if the proposals do not match */
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if (first_kex_follows && !proposals_match(my, peer) &&
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!(datafellows & SSH_BUG_FIRSTKEX)) {
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diff --git a/monitor.c b/monitor.c
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index 70b9b4c..81bc9c1 100644
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--- a/monitor.c
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+++ b/monitor.c
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@@ -2396,7 +2396,7 @@ int
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mm_answer_audit_kex_body(int sock, Buffer *m)
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{
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int ctos, len;
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- char *cipher, *mac, *compress;
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+ char *cipher, *mac, *compress, *pfs;
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pid_t pid;
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uid_t uid;
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@@ -2404,14 +2404,16 @@ mm_answer_audit_kex_body(int sock, Buffer *m)
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cipher = buffer_get_string(m, &len);
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mac = buffer_get_string(m, &len);
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compress = buffer_get_string(m, &len);
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+ pfs = buffer_get_string(m, &len);
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pid = buffer_get_int64(m);
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uid = buffer_get_int64(m);
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- audit_kex_body(ctos, cipher, mac, compress, pid, uid);
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+ audit_kex_body(ctos, cipher, mac, compress, pfs, pid, uid);
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free(cipher);
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free(mac);
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free(compress);
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+ free(pfs);
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buffer_clear(m);
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mm_request_send(sock, MONITOR_ANS_AUDIT_KEX, m);
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diff --git a/monitor_wrap.c b/monitor_wrap.c
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index 93f6535..69b29d8 100644
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--- a/monitor_wrap.c
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+++ b/monitor_wrap.c
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@@ -1408,7 +1408,7 @@ mm_audit_unsupported_body(int what)
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}
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void
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-mm_audit_kex_body(int ctos, char *cipher, char *mac, char *compress, pid_t pid,
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+mm_audit_kex_body(int ctos, char *cipher, char *mac, char *compress, char *fps, pid_t pid,
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uid_t uid)
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{
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Buffer m;
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@@ -1418,6 +1418,7 @@ mm_audit_kex_body(int ctos, char *cipher, char *mac, char *compress, pid_t pid,
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buffer_put_cstring(&m, cipher);
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buffer_put_cstring(&m, (mac ? mac : ""));
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buffer_put_cstring(&m, compress);
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+ buffer_put_cstring(&m, fps);
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buffer_put_int64(&m, pid);
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buffer_put_int64(&m, uid);
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diff --git a/monitor_wrap.h b/monitor_wrap.h
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index 4cf0c78..e43109f 100644
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--- a/monitor_wrap.h
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+++ b/monitor_wrap.h
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@@ -83,7 +83,7 @@ void mm_audit_event(ssh_audit_event_t);
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int mm_audit_run_command(const char *);
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void mm_audit_end_command(int, const char *);
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void mm_audit_unsupported_body(int);
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-void mm_audit_kex_body(int, char *, char *, char *, pid_t, uid_t);
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+void mm_audit_kex_body(int, char *, char *, char *, char *, pid_t, uid_t);
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void mm_audit_session_key_free_body(int, pid_t, uid_t);
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void mm_audit_destroy_sensitive_data(const char *, pid_t, uid_t);
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#endif
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diff --git a/sshd.c b/sshd.c
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index ee94825..41a94a7 100644
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--- a/sshd.c
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+++ b/sshd.c
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@@ -2430,7 +2430,7 @@ do_ssh1_kex(void)
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packet_disconnect("IP Spoofing check bytes do not match.");
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#ifdef SSH_AUDIT_EVENTS
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- audit_kex(2, cipher_name(cipher_type), "crc", "none");
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+ audit_kex(2, cipher_name(cipher_type), "crc", "none", "none");
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#endif
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debug("Encryption type: %.200s", cipher_name(cipher_type));
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