-----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-2002.001 08-Mar-2002 ________________________________________________________________________ Package: openssh Vulnerability: root exploit OpenPKG Specific: no Affected Releases: OpenPKG 1.0 Affected Packages: <= openssh-3.0.2p1-1.0.1 Corrected Packages: >= openssh-3.0.2p1-1.0.2 Dependent Packages: - Description: According to an OpenSSH Security Advisory [5] and the original PINE Internet Security Advisory [6] from Joost Pol <joostat_private>, there is an off-by-one bug in OpenSSH's channel code that could be used by an attacker with a local account on the victim's machine to obtain root privileges on that machine. Another scenario for this vulnerability is that of a malicious SSH server exploiting a vulnerable SSH client connecting to it. Please check whether you are affected by running "<prefix>/bin/rpm -qa openssh". If you have the "openssh" package installed and its version is affected (see above), we recommend that you immediately upgrade it (see Solution). Additionally, we recommend that you rebuild and reinstall all dependent OpenPKG packages, too. [2] Workaround: Perform the following operations to temporarily workaround the security problem (be careful, it deactivates the whole service): $ su - # <prefix>/etc/rc openssh stop # <prefix>/bin/rpm -e openssh Solution: Select the updated source RPM appropriate for your OpenPKG release [4], fetch it from the OpenPKG FTP service [3] or a mirror location, verify its integrity [1], build a corresponding binary RPM from it and update your OpenPKG installation by applying the binary RPM [2]. For the latest OpenPKG 1.0 release, perform the following operations to permanently fix the security problem (for other releases adjust accordingly). $ ftp ftp.openpkg.org ftp> bin ftp> cd release/1.0/UPD ftp> get openssh-3.0.2p1-1.0.2.src.rpm ftp> bye $ <prefix>/bin/rpm --checksig openssh-3.0.2p1-1.0.2.src.rpm $ <prefix>/bin/rpm --rebuild openssh-3.0.2p1-1.0.2.src.rpm $ su - # <prefix>/bin/rpm -Fvh <prefix>/RPM/PKG/openssh-3.0.2p1-1.0.2.*.rpm ________________________________________________________________________ References: [1] http://www.openpkg.org/security.html#signature [2] http://www.openpkg.org/tutorial.html#regular-source [3] ftp://ftp.openpkg.org/release/1.0/UPD/ [4] ftp://ftp.openpkg.org/release/1.0/UPD/openssh-3.0.2p1-1.0.2.src.rpm [5] http://www.openbsd.org/advisories/ssh_channelalloc.txt [6] http://www.pine.nl/advisories/pine-cert-20020301.txt ________________________________________________________________________ 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> iEYEARECAAYFAjyIiiYACgkQgHWT4GPEy5+DrACgkSjm3y6VaFqQrtxKCU1eDYEo RrcAn2W4B3hDbVLjHvHOaiXFeu0kjjvx =qaL1 -----END PGP SIGNATURE-----
This archive was generated by hypermail 2b30 : Fri Mar 08 2002 - 11:46:20 PST