-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SUSE Security Announcement Package: kernel Announcement ID: SUSE-SA:2009:033 Date: Tue, 16 Jun 2009 12:00:00 +0000 Affected Products: SUSE SLES 9 Novell Linux Desktop 9 Open Enterprise Server Novell Linux POS 9 Vulnerability Type: remote code execution Severity (1-10): 8 SUSE Default Package: yes Cross-References: CVE-2009-0859, CVE-2009-1072, CVE-2009-1265 CVE-2009-1337, CVE-2009-1439 Content of This Advisory: 1) Security Vulnerability Resolved: Linux kernel security problems Problem Description 2) Solution or Work-Around 3) Special Instructions and Notes 4) Package Location and Checksums 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. 6) Authenticity Verification and Additional Information ______________________________________________________________________________ 1) Problem Description and Brief Discussion This update of the Linux kernel for SUSE Linux Enterprise Server 9 SP4 contains various bug- and two security-fixes. The following security vulnerabilities have been fixed: CVE-2009-1072: nfsd in the Linux kernel did not drop the CAP_MKNOD capability before handling a user request in a thread, which allows local users to create device nodes, as demonstrated on a filesystem that has been exported with the root_squash option. CVE-2009-1439: Buffer overflow in fs/cifs/connect.c in CIFS in the Linux kernel 2.6.29 and earlier allows remote attackers to cause a denial of service (crash) or potential code execution via a long nativeFileSystem field in a Tree Connect response to an SMB mount request. This requires that kernel can be made to mount a "cifs" filesystem from a malicious CIFS server. CVE-2009-1337: The exit_notify function in kernel/exit.c in the Linux kernel did not restrict exit signals when the CAP_KILL capability is held, which allows local users to send an arbitrary signal to a process by running a program that modifies the exit_signal field and then uses an exec system call to launch a setuid application. CVE-2009-0859: The shm_get_stat function in ipc/shm.c in the shm subsystem in the Linux kernel, when CONFIG_SHMEM is disabled, misinterprets the data type of an inode, which allows local users to cause a denial of service (system hang) via an SHM_INFO shmctl call, as demonstrated by running the ipcs program. (SUSE is enabling CONFIG_SHMEM, so is by default not affected, the fix is just for completeness). The GCC option -fwrapv has been added to compilation to work around potentially removing integer overflow checks. CVE-2009-1265: Integer overflow in rose_sendmsg (sys/net/af_rose.c) in the Linux kernel might allow attackers to obtain sensitive information via a large length value, which causes "garbage" memory to be sent. For the normal bugfixes please review the RPM changelog. 2) Solution or Work-Around There is no known workaround, please install the update packages. 3) Special Instructions and Notes Reboot the machine after installing the update. 4) Package Location and Checksums The preferred method for installing security updates is to use the YaST Online Update (YOU) tool. YOU detects which updates are required and automatically performs 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 <file.rpm> to apply the update, replacing <file.rpm> with the filename of the downloaded RPM package. Our maintenance customers are notified individually. The packages are offered for installation from the maintenance web: SUSE CORE 9 for AMD64 and Intel EM64T http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=da42ab1c030899314548fc2b5e5fbf9b SUSE CORE 9 for IBM zSeries 64bit http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=76e5e57de6307272db0ff310ec87c1d7 SUSE CORE 9 for IBM S/390 31bit http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=44f06b667195e8117d6bb191a31de5e8 SUSE CORE 9 for IBM POWER http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7ba691449b5b522a31220b0c55f5e954 Open Enterprise Server http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=21e76be75d3a330f9158c3dee8f8717e Novell Linux Desktop 9 for x86 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=21e76be75d3a330f9158c3dee8f8717e SUSE CORE 9 for Itanium Processor Family http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=afc0a77961e126742a1b72868508d13e Novell Linux POS 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8dd483721f3e24368457b8684991c59c SUSE SLES 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=da42ab1c030899314548fc2b5e5fbf9b http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=76e5e57de6307272db0ff310ec87c1d7 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=44f06b667195e8117d6bb191a31de5e8 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=7ba691449b5b522a31220b0c55f5e954 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=afc0a77961e126742a1b72868508d13e http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8dd483721f3e24368457b8684991c59c SUSE CORE 9 for x86 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=8dd483721f3e24368457b8684991c59c Novell Linux Desktop 9 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=21e76be75d3a330f9158c3dee8f8717e http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=0709473b0d187d0b5e8b2119619bb4ec Novell Linux Desktop 9 for x86_64 http://download.novell.com/index.jsp?search=Search&set_restricted=true&keywords=0709473b0d187d0b5e8b2119619bb4ec ______________________________________________________________________________ 5) Pending Vulnerabilities, Solutions, and Work-Arounds: See SUSE Security Summary Report. ______________________________________________________________________________ 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 <security@suse.de>" 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 <file.rpm> to verify the signature of the package, replacing <file.rpm> 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+subscribe@opensuse.org>. 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 <opensuse-security-announce+subscribe@opensuse.org>. ===================================================================== SUSE's security contact is <security@suse.com> or <security@suse.de>. The <security@suse.de> 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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