Author: simon Date: Sat Feb 12 21:30:46 2011 New Revision: 218625 URL: http://svn.freebsd.org/changeset/base/218625
Log: Fix Incorrectly formatted ClientHello SSL/TLS handshake messages could cause OpenSSL to parse past the end of the message. Note: Applications are only affected if they act as a server and call SSL_CTX_set_tlsext_status_cb on the server's SSL_CTX. This includes Apache httpd >= 2.3.3, if configured with "SSLUseStapling On". Security: http://www.openssl.org/news/secadv_20110208.txt Security: CVE-2011-0014 Obtained from: OpenSSL CVS Modified: head/crypto/openssl/ssl/t1_lib.c Modified: head/crypto/openssl/ssl/t1_lib.c ============================================================================== --- head/crypto/openssl/ssl/t1_lib.c Sat Feb 12 21:30:08 2011 (r218624) +++ head/crypto/openssl/ssl/t1_lib.c Sat Feb 12 21:30:46 2011 (r218625) @@ -521,6 +521,7 @@ int ssl_parse_clienthello_tlsext(SSL *s, } n2s(data, idsize); dsize -= 2 + idsize; + size -= 2 + idsize; if (dsize < 0) { *al = SSL_AD_DECODE_ERROR; @@ -559,9 +560,14 @@ int ssl_parse_clienthello_tlsext(SSL *s, } /* Read in request_extensions */ + if (size < 2) + { + *al = SSL_AD_DECODE_ERROR; + return 0; + } n2s(data,dsize); size -= 2; - if (dsize > size) + if (dsize != size) { *al = SSL_AD_DECODE_ERROR; return 0; _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
