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70 lines
2.1 KiB
70 lines
2.1 KiB
From b2b0eab46a8ae36f2dd49159e65c90c1089a0f96 Mon Sep 17 00:00:00 2001
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From: "Thierry FOURNIER / OZON.IO" <thierry.fournier@ozon.io>
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Date: Thu, 6 Oct 2016 10:56:48 +0200
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Subject: [PATCH 11/26] BUG/MINOR: ssl: prevent multiple entries for the same
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certificate
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Today, the certificate are indexed int he SNI tree using their CN and the
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list of thier AltNames. So, Some certificates have the same names in the
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CN and one of the AltNames entries.
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Typically Let's Encrypt duplicate the the DNS name in the CN and the
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AltName.
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This patch prevents the creation of identical entries in the trees. It
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checks the same DNS name and the same SSL context.
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If the same certificate is registered two time it will be duplicated.
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This patch should be backported in the 1.6 and 1.5 version.
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(cherry picked from commit 07c3d78c2c0693ee37db71c34723597638b6ab3f)
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---
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src/ssl_sock.c | 22 +++++++++++++++++++---
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1 file changed, 19 insertions(+), 3 deletions(-)
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diff --git a/src/ssl_sock.c b/src/ssl_sock.c
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index 5f9a203..ad8054d 100644
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--- a/src/ssl_sock.c
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+++ b/src/ssl_sock.c
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@@ -1556,6 +1556,7 @@ static int ssl_sock_add_cert_sni(SSL_CTX *ctx, struct bind_conf *s, char *name,
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{
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struct sni_ctx *sc;
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int wild = 0, neg = 0;
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+ struct ebmb_node *node;
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if (*name == '!') {
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neg = 1;
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@@ -1571,12 +1572,27 @@ static int ssl_sock_add_cert_sni(SSL_CTX *ctx, struct bind_conf *s, char *name,
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if (*name) {
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int j, len;
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len = strlen(name);
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+ for (j = 0; j < len && j < trash.size; j++)
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+ trash.str[j] = tolower(name[j]);
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+ if (j >= trash.size)
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+ return order;
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+ trash.str[j] = 0;
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+
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+ /* Check for duplicates. */
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+ if (wild)
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+ node = ebst_lookup(&s->sni_w_ctx, trash.str);
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+ else
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+ node = ebst_lookup(&s->sni_ctx, trash.str);
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+ for (; node; node = ebmb_next_dup(node)) {
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+ sc = ebmb_entry(node, struct sni_ctx, name);
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+ if (sc->ctx == ctx && sc->neg == neg)
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+ return order;
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+ }
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+
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sc = malloc(sizeof(struct sni_ctx) + len + 1);
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if (!sc)
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return order;
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- for (j = 0; j < len; j++)
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- sc->name.key[j] = tolower(name[j]);
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- sc->name.key[len] = 0;
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+ memcpy(sc->name.key, trash.str, len + 1);
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sc->ctx = ctx;
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sc->order = order++;
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sc->neg = neg;
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--
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2.7.3
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