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mod_ssl: Catch missing, mismatched or encrypted client cert/key pairs

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with SSLProxyMachineCertificateFile/Path directives. PR 52212, PR 54698.
(check at startup, to prevent segfaults at proxy request time)

trunk patches: https://svn.apache.org/r1374214
               https://svn.apache.org/r1374216
               https://svn.apache.org/r1375445
               https://svn.apache.org/r1467593
2.4.x patch: https://people.apache.org/~kbrand/PR52212_54698_2.4.x.patch

Submitted by: kbrand
Reviewed by: jorton, minfrin


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/2.4.x@1476685 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Graham Leggett
2013-04-27 22:18:02 +00:00
parent 10f016d7ed
commit 059505bfac
3 changed files with 20 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
modules/ssl/ssl_engine_init.c
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@ -1354,7 +1354,8 @@ static void ssl_init_proxy_certs(server_rec *s,
for (n = 0; n < ncerts; n++) {
X509_INFO *inf = sk_X509_INFO_value(sk, n);
if (!inf->x509 || !inf->x_pkey) {
if (!inf->x509 || !inf->x_pkey || !inf->x_pkey->dec_pkey ||
inf->enc_data) {
sk_X509_INFO_free(sk);
ap_log_error(APLOG_MARK, APLOG_STARTUP, 0, s, APLOGNO(02252)
"incomplete client cert configured for SSL proxy "
@ -1362,6 +1363,15 @@ static void ssl_init_proxy_certs(server_rec *s,
ssl_die(s);
return;
}
if (X509_check_private_key(inf->x509, inf->x_pkey->dec_pkey) != 1) {
ssl_log_xerror(SSLLOG_MARK, APLOG_STARTUP, 0, ptemp, s, inf->x509,
APLOGNO(02326) "proxy client certificate and "
"private key do not match");
ssl_log_ssl_error(SSLLOG_MARK, APLOG_ERR, s);
ssl_die(s);
return;
}
}
ap_log_error(APLOG_MARK, APLOG_DEBUG, 0, s, APLOGNO(02207)
@ -1374,7 +1384,11 @@ static void ssl_init_proxy_certs(server_rec *s,
return;
}
/* Load all of the CA certs and construct a chain */
/* If SSLProxyMachineCertificateChainFile is configured, load all
* the CA certs and have OpenSSL attempt to construct a full chain
* from each configured end-entity cert up to a root. This will
* allow selection of the correct cert given a list of root CA
* names in the certificate request from the server. */
pkp->ca_certs = (STACK_OF(X509) **) apr_pcalloc(p, ncerts * sizeof(sk));
sctx = X509_STORE_CTX_new();