Test Kennung:	1.3.6.1.4.1.25623.1.0.71900
Kategorie:	Red Hat Local Security Checks
Titel:	RedHat Security Advisory RHSA-2012:0358
Zusammenfassung:	NOSUMMARY
Beschreibung:	Description: The remote host is missing updates announced in advisory RHSA-2012:0358. The kernel packages contain the Linux kernel, the core of any Linux operating system. This update fixes the following security issues: * Using PCI passthrough without interrupt remapping support allowed Xen hypervisor guests to generate MSI interrupts and thus potentially inject traps. A privileged guest user could use this flaw to crash the host or possibly escalate their privileges on the host. The fix for this issue can prevent PCI passthrough working and guests starting. Refer to Red Hat Bugzilla bug 715555 for details. (CVE-2011-1898, Important) * IPv6 fragment identification value generation could allow a remote attacker to disrupt a target system's networking, preventing legitimate users from accessing its services. (CVE-2011-2699, Important) * Using the SG_IO ioctl to issue SCSI requests to partitions or LVM volumes resulted in the requests being passed to the underlying block device. If a privileged user only had access to a single partition or LVM volume, they could use this flaw to bypass those restrictions and gain read and write access (and be able to issue other SCSI commands) to the entire block device. Refer to Red Hat Knowledgebase article 67869, linked to in the References, for further details about this issue. (CVE-2011-4127, Important) * A flaw was found in the way the Linux kernel handled robust list pointers of user-space held futexes across exec() calls. A local, unprivileged user could use this flaw to cause a denial of service or, eventually, escalate their privileges. (CVE-2012-0028, Important) * A missing boundary check was found in the Linux kernel's HFS file system implementation. A local attacker could use this flaw to cause a denial of service or escalate their privileges by mounting a specially-crafted disk. (CVE-2011-4330, Moderate) Red Hat would like to thank Fernando Gont for reporting CVE-2011-2699, and Clement Lecigne for reporting CVE-2011-4330. This update also fixes the following bugs: * Previously, all timers for a Xen fully-virtualized domain were based on the time stamp counter (TSC) of the underlying physical CPU. This could cause observed time to go backwards on some hosts. This update moves all timers except HPET to the Xen monotonic system time, which fixes the bug as long as the HPET is removed from the configuration of the domain. (BZ#773359) * Previously, tests of the Microsoft Server Virtualization Validation Program (SVVP) detected unreliability of the emulated HPET (High Performance Event Timer) on some hosts. Now, HPET can be configured as a per-domain configuration option if it is disabled, the guest chooses a more reliable timer source. Disabling HPET is suggested for Windows guests, as well as fully-virtualized Linux guests that show occasional time went backwards errors in the console. (BZ#773360) * SG_IO ioctls were not implemented correctly in the Red Hat Enterprise Linux 5 virtio-blk driver. Sending an SG_IO ioctl request to a virtio-blk disk caused the sending thread to enter an uninterruptible sleep state (D state). With this update, SG_IO ioctls are rejected by the virtio-blk driver the ioctl system call simply returns an ENOTTY (Inappropriate ioctl for device) error and the thread continues normally. (BZ#784658) Users should upgrade to these updated packages, which contain backported patches to correct these issues. The system must be rebooted for this update to take effect. Solution: Please note that this update is available via Red Hat Network. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date http://rhn.redhat.com/errata/RHSA-2012-0358.html Risk factor : High
Querverweis:	Common Vulnerability Exposure (CVE) ID: CVE-2011-1898 http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062139.html http://lists.fedoraproject.org/pipermail/package-announce/2011-June/062112.html http://theinvisiblethings.blogspot.com/2011/05/following-white-rabbit-software-attacks.html http://www.invisiblethingslab.com/resources/2011/Software%20Attacks%20on%20Intel%20VT-d.pdf http://xen.1045712.n5.nabble.com/Xen-security-advisory-CVE-2011-1898-VT-d-PCI-passthrough-MSI-td4390298.html SuSE Security Announcement: SUSE-SU-2011:0942 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00018.html SuSE Security Announcement: openSUSE-SU-2011:0941 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2011-08/msg00017.html Common Vulnerability Exposure (CVE) ID: CVE-2011-2699 1027274 http://www.securitytracker.com/id?1027274 MDVSA-2013:150 http://www.mandriva.com/security/advisories?name=MDVSA-2013:150 [oss-security] 20110720 Re: CVE request: kernel: ipv6: make fragment identifications less predictable http://www.openwall.com/lists/oss-security/2011/07/20/5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=87c48fa3b4630905f98268dde838ee43626a060c http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 https://bugzilla.redhat.com/show_bug.cgi?id=723429 https://github.com/torvalds/linux/commit/87c48fa3b4630905f98268dde838ee43626a060c Common Vulnerability Exposure (CVE) ID: CVE-2011-4127 48898 http://secunia.com/advisories/48898 SUSE-SU-2012:0554 http://lists.opensuse.org/opensuse-security-announce/2012-04/msg00021.html SUSE-SU-2015:0812 http://lists.opensuse.org/opensuse-security-announce/2015-04/msg00020.html [oss-security] 20111222 CVE-2011-4127 kernel: possible privilege escalation via SG_IO ioctl http://www.openwall.com/lists/oss-security/2011/12/22/5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=0bfc96cb77224736dfa35c3c555d37b3646ef35e http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ec8013beddd717d1740cfefb1a9b900deef85462 http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.2.2 https://bugzilla.redhat.com/show_bug.cgi?id=752375 https://github.com/torvalds/linux/commit/0bfc96cb77224736dfa35c3c555d37b3646ef35e https://github.com/torvalds/linux/commit/ec8013beddd717d1740cfefb1a9b900deef85462 Common Vulnerability Exposure (CVE) ID: CVE-2011-4330 50750 http://www.securityfocus.com/bid/50750 [linux-kernel] 20111109 [BUG][SECURITY] Kernel stack overflow in hfs_mac2asc() https://lkml.org/lkml/2011/11/9/303 [oss-security] 20111121 Re: kernel: hfs: add sanity check for file name length http://www.openwall.com/lists/oss-security/2011/11/21/14 [oss-security] 20111121 kernel: hfs: add sanity check for file name length http://www.openwall.com/lists/oss-security/2011/11/21/5 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commitdiff%3Bh=bc5b8a9003132ae44559edd63a1623 https://bugzilla.redhat.com/show_bug.cgi?id=755431 Common Vulnerability Exposure (CVE) ID: CVE-2012-0028 [oss-security] 20120508 Re: CVE Request -- kernel: futex: clear robust_list on execve http://www.openwall.com/lists/oss-security/2012/05/08/1 http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.28 http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=8141c7f3e7aee618312fa1c15109e1219de784a7 https://bugzilla.redhat.com/show_bug.cgi?id=771764 https://github.com/torvalds/linux/commit/8141c7f3e7aee618312fa1c15109e1219de784a7
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