-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: NetworkManager, wpa_supplicant, NetworkManager-gnome Announcement ID: SUSE-SA:2011:045 Date: Tue, 22 Nov 2011 15:00:00 +0000 Affected Products: openSUSE 11.3 openSUSE 11.4 openSUSE 12.1 SUSE Linux Enterprise Desktop 11 SP1 SUSE Linux Enterprise Server 11 SP1 Vulnerability Type: man in the middle CVSS v2 Base Score: 4.3 (AV:A/AC:M/Au:N/C:P/I:P/A:N) SUSE Default Package: yes Cross-References: CVE-2006-7246 Content of This Advisory: 1) Security Vulnerability Resolved: NetworkManager man in the middle attack Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - none 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion When 802.11X authentication is used (ie WPA Enterprise) NetworkManager did not pin a certificate's subject to an ESSID. A rogue access point could therefore be used to conduct MITM attacks by using any other valid certificate issued by the same CA as used in the original network (CVE-2006-7246). If password based authentication is used (e.g. via PEAP or EAP-TTLS) this means an attacker could sniff and potentially crack the password hashes of the victims. The certificate checks are only performed on newly created connections. Users must therefore delete and re-create any existing WPA Enterprise connections using e.g. nm-connection-editor to take advantage of the checks. knetworkmanager is also affected by but a fix is currently not available. Users of knetworkmanager are advised to use nm-applet for 802.11X networks instead. The following document gives a more detailed explanation about the problem in general. Administrators are advised to take the opportunity to review security of their wireless networks if 802.11X authentication is used. http://www.suse.de/~lnussel/The_Evil_Twin_problem_with_WPA2-Enterprise_v1.1.... 2) Solution or Work-Around There is no known workaround, please install the update packages. As precautionary measure you may turn off automatically connecting to WPA Enterprise networks. 3) Special Instructions and Notes Please reboot after the update and re-create any WPA Enterprise connections from scratch. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST "Online Update" module or the "zypper" commandline tool. The package and patch management stack will detect which updates are required and automatically perform the necessary steps to verify and install them. Alternatively, download the update packages for your distribution manually and verify their integrity by the methods listed in Section 6 of this announcement. Then install the packages using the command rpm -Fhv to apply the update, replacing with the filename of the downloaded RPM package. x86 Platform: openSUSE 11.4: http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-0.8.2-15.28... http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-devel-0.8.2... http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-doc-0.8.2-1... http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-glib-0.8.2-... http://download.opensuse.org/update/11.4/rpm/i586/NetworkManager-gnome-0.8.2... http://download.opensuse.org/update/11.4/rpm/i586/wpa_supplicant-0.7.3-3.4.1... http://download.opensuse.org/update/11.4/rpm/i586/wpa_supplicant-gui-0.7.3-3... openSUSE 11.3: http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-0.8-8.13.1.... http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-devel-0.8-8... http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-doc-0.8-8.1... http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-glib-0.8-8.... http://download.opensuse.org/update/11.3/rpm/i586/NetworkManager-gnome-0.8-6... http://download.opensuse.org/update/11.3/rpm/i586/wpa_supplicant-0.7.1-5.3.1... http://download.opensuse.org/update/11.3/rpm/i586/wpa_supplicant-gui-0.7.1-5... Platform Independent: openSUSE 11.4: http://download.opensuse.org/update/11.4/rpm/noarch/NetworkManager-gnome-lan... http://download.opensuse.org/update/11.4/rpm/noarch/NetworkManager-lang-0.8.... x86-64 Platform: openSUSE 11.4: http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-0.8.2-15.... http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-devel-0.8... http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-doc-0.8.2... http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-glib-0.8.... http://download.opensuse.org/update/11.4/rpm/x86_64/NetworkManager-gnome-0.8... http://download.opensuse.org/update/11.4/rpm/x86_64/wpa_supplicant-0.7.3-3.4... http://download.opensuse.org/update/11.4/rpm/x86_64/wpa_supplicant-gui-0.7.3... openSUSE 11.3: http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-0.8-8.13.... http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-devel-0.8... http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-doc-0.8-8... http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-glib-0.8-... http://download.opensuse.org/update/11.3/rpm/x86_64/NetworkManager-gnome-0.8... http://download.opensuse.org/update/11.3/rpm/x86_64/wpa_supplicant-0.7.1-5.3... http://download.opensuse.org/update/11.3/rpm/x86_64/wpa_supplicant-gui-0.7.1... Sources: openSUSE 11.4: http://download.opensuse.org/update/11.4/rpm/src/NetworkManager-0.8.2-15.28.... http://download.opensuse.org/update/11.4/rpm/src/NetworkManager-gnome-0.8.2-... http://download.opensuse.org/update/11.4/rpm/src/wpa_supplicant-0.7.3-3.4.1.... openSUSE 11.3: http://download.opensuse.org/update/11.3/rpm/src/NetworkManager-0.8-8.13.1.s... http://download.opensuse.org/update/11.3/rpm/src/NetworkManager-gnome-0.8-6.... http://download.opensuse.org/update/11.3/rpm/src/wpa_supplicant-0.7.1-5.3.1.... Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: SUSE Linux Enterprise Software Development Kit 11 SP1 http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f8... SUSE Linux Enterprise Desktop 11 SP1 http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f8... SUSE Linux Enterprise Server 11 SP1 http://download.novell.com/patch/finder/?keywords=470bd49885d23715755d7bb4f8... ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: - none ______________________________________________________________________________ 6) Authenticity Verification and Additional Information - Announcement authenticity verification: SUSE security announcements are published via mailing lists and on Web sites. The authenticity and integrity of a SUSE security announcement is guaranteed by a cryptographic signature in each announcement. All SUSE security announcements are published with a valid signature. To verify the signature of the announcement, save it as text into a file and run the command gpg --verify <file> replacing <file> with the name of the file where you saved the announcement. The output for a valid signature looks like: gpg: Signature made <DATE> using RSA key ID 3D25D3D9 gpg: Good signature from "SuSE Security Team " where <DATE> is replaced by the date the document was signed. If the security team's key is not contained in your key ring, you can import it from the first installation CD. To import the key, use the command gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc - Package authenticity verification: SUSE update packages are available on many mirror FTP servers all over the world. While this service is considered valuable and important to the free and open source software community, the authenticity and the integrity of a package needs to be verified to ensure that it has not been tampered with. The internal rpm package signatures provide an easy way to verify the authenticity of an RPM package. Use the command rpm -v --checksig to verify the signature of the package, replacing with the filename of the RPM package downloaded. The package is unmodified if it contains a valid signature from build@suse.de with the key ID 9C800ACA. This key is automatically imported into the RPM database (on RPMv4-based distributions) and the gpg key ring of 'root' during installation. You can also find it on the first installation CD and at the end of this announcement. - SUSE runs two security mailing lists to which any interested party may subscribe: opensuse-security@opensuse.org - General Linux and SUSE security discussion. All SUSE security announcements are sent to this list. To subscribe, send an e-mail to . opensuse-security-announce@opensuse.org - SUSE's announce-only mailing list. Only SUSE's security announcements are sent to this list. To subscribe, send an e-mail to . ===================================================================== SUSE's security contact is or . The public key is listed below. ===================================================================== ______________________________________________________________________________ The information in this advisory may be distributed or reproduced, provided that the advisory is not modified in any way. In particular, the clear text signature should show proof of the authenticity of the text. SUSE Linux Products GmbH provides no warranties of any kind whatsoever with respect to the information contained in this security advisory. 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