-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ________________________________________________________________________ OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org openpkg-securityat_private openpkgat_private OpenPKG-SA-2003.020 18-Mar-2003 ________________________________________________________________________ Package: apache (option "with_mod_ssl" only) Vulnerability: local and remote extraction of RSA private key OpenPKG Specific: no Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= apache-1.3.27-20030305 >= apache-1.3.27-20030318 OpenPKG 1.2 <= apache-1.3.27-1.2.1 >= apache-1.3.27-1.2.2 OpenPKG 1.1 <= apache-1.3.26-1.1.3 >= apache-1.3.26-1.1.4 Dependent Packages: none Description: David Brumley and Dan Boneh of Stanford University have researched and documented a timing attack on OpenSSL which allows local and remote attackers to extract the RSA private key of an SSL/TLS server like Apache/mod_ssl. [0] The OpenSSL [1] RSA implementation is generally vulnerable to these type of attacks unless RSA blinding has been turned on [2]. RSA blinding previously was not explicitly enabled by mod_ssl. If Apache/mod_ssl is linked against the already fixed OpenSSL versions (see security advisory OpenPKG-SA-2003.019 [3]), the problem is already implicitly fixed inside OpenSSL. Nevertheless, mod_ssl 2.8.13 now explicitly enables RSA blinding for RSA private keys. For older versions, we include this prevention change in OpenPKG, too. Please check whether you are affected by running "<prefix>/bin/rpm -q apache" and "<prefix>/bin/rpm -qi apache | grep with_mod_ssl". If you have the "apache" package with option "with_mod_ssl" installed and its version is affected (see above), we recommend that you immediately upgrade (see Solution) [4][5]. Solution: Select the updated source RPM appropriate for your OpenPKG release [6][7], fetch it from the OpenPKG FTP service [8][9] or a mirror location, verify its integrity [10], build a corresponding binary RPM from it [4] and update your OpenPKG installation by applying the binary RPM [5]. For the current release OpenPKG 1.2, perform the following operations to permanently fix the security problem (for other releases adjust accordingly). $ ftp ftp.openpkg.org ftp> bin ftp> cd release/1.2/UPD ftp> get apache-1.3.27-1.2.2.src.rpm ftp> bye $ <prefix>/bin/rpm -v --checksig apache-1.3.27-1.2.2.src.rpm $ <prefix>/bin/rpm --rebuild apache-1.3.27-1.2.2.src.rpm $ su - # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/apache-1.3.27-1.2.2.*.rpm ________________________________________________________________________ References: [0] http://crypto.stanford.edu/~dabo/papers/ssl-timing.pdf [1] http://www.openssl.org/ [2] http://www.openssl.org/news/secadv_20030317.txt [3] http://www.openpkg.org/security/OpenPKG-SA-2003.019-openssl.html [4] http://www.openpkg.org/tutorial.html#regular-source [5] http://www.openpkg.org/tutorial.html#regular-binary [6] ftp://ftp.openpkg.org/release/1.1/UPD/apache-1.3.26-1.1.4.src.rpm [7] ftp://ftp.openpkg.org/release/1.2/UPD/apache-1.3.27-1.2.2.src.rpm [8] ftp://ftp.openpkg.org/release/1.1/UPD/ [9] ftp://ftp.openpkg.org/release/1.2/UPD/ [10] http://www.openpkg.org/security.html#signature ________________________________________________________________________ For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG <openpkgat_private>" (ID 63C4CB9F) of the OpenPKG project which you can find under the official URL http://www.openpkg.org/openpkg.pgp or on http://keyserver.pgp.com/. To check the integrity of this advisory, verify its digital signature by using GnuPG (http://www.gnupg.org/). For instance, pipe this message to the command "gpg --verify --keyserver keyserver.pgp.com". ________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Comment: OpenPKG <openpkgat_private> iD8DBQE+dztWgHWT4GPEy58RApBVAJ9+50Nlwfhuu7ORHF3aPwRWyMrOdACcCJjf Q+69FxYxCzvkPEwNeX+9sLU= =/TMJ -----END PGP SIGNATURE-----
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