chacha20poly1305

[openssl.git] / ssl / ssl_rsa.c

diff --git a/ssl/ssl_rsa.c b/ssl/ssl_rsa.c
index 2837624ae9e387590cba33fdc8ac17259f2defc6..55dc1b3dd912ab57fe63d7c5bdc6ec3e033fecf2 100644 (file)
--- a/ssl/ssl_rsa.c
+++ b/ssl/ssl_rsa.c
@@ -1206,6 +1206,7 @@ int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
        long extension_length = 0;
        char* name = NULL;
        char* header = NULL;
+       char namePrefix[] = "SERVERINFO FOR ";
        int ret = 0;
        BIO *bin = NULL;
        size_t num_extensions = 0;
@@ -1235,17 +1236,28 @@ int SSL_CTX_use_serverinfo_file(SSL_CTX *ctx, const char *file)
                        /* There must be at least one extension in this file */
                        if (num_extensions == 0)
                                {
-                               SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_PEM_LIB);
+                               SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_NO_PEM_EXTENSIONS);
                                goto end;
                                }
                        else /* End of file, we're done */
                                break;
                        }
+               /* Check that PEM name starts with "BEGIN SERVERINFO FOR " */
+               if (strlen(name) < strlen(namePrefix))
+                       {
+                       SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_TOO_SHORT);
+                       goto end;
+                       }
+               if (strncmp(name, namePrefix, strlen(namePrefix)) != 0)
+                       {
+                       SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_PEM_NAME_BAD_PREFIX);
+                       goto end;
+                       }
                /* Check that the decoded PEM data is plausible (valid length field) */
                if (extension_length < 4 || (extension[2] << 8) + extension[3] != extension_length - 4)
                        {
-                               SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, ERR_R_PEM_LIB);
-                               goto end;
+                       SSLerr(SSL_F_SSL_CTX_USE_SERVERINFO_FILE, SSL_R_BAD_DATA);
+                       goto end;
                        }
                /* Append the decoded extension to the serverinfo buffer */
                serverinfo = OPENSSL_realloc(serverinfo, serverinfo_length + extension_length);