The IPv6 protocol allows remote attackers to cause a denial of service via crafted IPv6 type 0 route headers (IPV6_RTHDR_TYPE_0) that create network amplification between two routers.

The remote Oracle Linux 5 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2007-0347 advisory.

    [2.6.18-8.1.4.0.1.el5]
     -Fix bonding primary=ethX so it picks correct network (Bert Barbe) [IT      101532] [ORA 5136660]
     -Add entropy module option to e1000 (John Sobecki) [ORA 6045759]
     -Add entropy module option to bnx2 (John Sobecki) [ORA 6045759]

     [2.6.18.8.1.4.el5]
     - [ipv6] Fix routing regression. (David S. Miller ) [238046]
     - [mm] Gdb does not accurately output the backtrace. (Dave Anderson )      [235511]
     - [NMI] change watchdog timeout to 30 seconds (Larry Woodman ) [237655]
     - [dlm] fix mode munging (David Teigland ) [238731]
     - [net] kernel-headers: missing include of types.h (Neil Horman ) [238749]
     - [net] fib_semantics.c out of bounds check (Thomas Graf ) [238948]      {CVE-2007-2172}
     - [net] disallow RH0 by default (Thomas Graf ) [238949] {CVE-2007-2242}
     - [net] Fix user OOPS'able bug in FIB netlink (David S. Miller )      [238960] {CVE-2007-1861}
     - [net] IPv6 fragments bypass in nf_conntrack netfilter code (Thomas      Graf ) [238947] {CVE-2007-1497}
     - [net] ipv6_fl_socklist is inadvertently shared (David S. Miller )      [238944] {CVE-2007-1592}
     - [net] Various NULL pointer dereferences in netfilter code (Thomas Graf      ) [238946] {CVE-2007-1496}

     [2.6.18-8.1.3.el5]
     - [s390] page_mkclean causes data corruption on s390 (Jan Glauber ) [236605]

     [2.6.18-8.1.2.el5]
     - [utrace] exploit and unkillable cpu fixes (Roland McGrath ) [228816]      (CVE-2007-0771)
     - [net] IPV6 security holes in ipv6_sockglue.c - 2 (David S. Miller )      [232257] {CVE-2007-1000}
     - [net] IPV6 security holes in ipv6_sockglue.c (David S. Miller )      [232255] {CVE-2007-1388}
     - [audit] GFP_KERNEL allocations in non-blocking context fix (Alexander      Viro ) [233157]

     [2.6.18-8.1.1.el5]
     - [cpufreq] Remove __initdata from tscsync (Prarit Bhargava ) [229887]
     - [security] Fix key serial number collision problem (David Howells )      [229883] {CVE-2007-0006}
     - [fs] Don't core dump read-only binarys (Don Howard ) [229885]      {CVE-2007-0958}
     - [xen] Enable booting on machines with > 64G (Chris Lalancette) [230117]
     - Fix potential buffer overflow in cardman 4040 cmx driver (Don Howard)      [229884] {CVE-2007-0005}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

These new kernel packages contain fixes for the following security issues :

  - a flaw in the handling of IPv6 type 0 routing headers     that allowed remote users to cause a denial of service     that led to a network amplification between two routers     (CVE-2007-2242, Important).

  - a flaw in the nfnetlink_log netfilter module that     allowed a local user to cause a denial of service     (CVE-2007-1496, Important).

  - a flaw in the flow list of listening IPv6 sockets that     allowed a local user to cause a denial of service     (CVE-2007-1592, Important).

  - a flaw in the handling of netlink messages that allowed     a local user to cause a denial of service (infinite     recursion) (CVE-2007-1861, Important).

  - a flaw in the IPv4 forwarding base that allowed a local     user to cause an out-of-bounds access (CVE-2007-2172,     Important).

  - a flaw in the nf_conntrack netfilter module for IPv6     that allowed remote users to bypass certain netfilter     rules using IPv6 fragments (CVE-2007-1497, Moderate).

In addition to the security issues described above, fixes for the following have been included :

  - a regression in ipv6 routing.

  - an error in memory initialization that caused gdb to     output inaccurate backtraces on ia64.

  - the nmi watchdog timeout was updated from 5 to 30     seconds.

  - a flaw in distributed lock management that could result     in errors during virtual machine migration.

  - an omitted include in kernel-headers that led to compile     failures for some packages.

This kernel update fixes the following security problems :

  - The IPv6 protocol allows remote attackers to cause a     denial of service via crafted IPv6 type 0 route headers     (IPV6_RTHDR_TYPE_0) that create network amplification     between two routers. (CVE-2007-2242)

    The default is that RH0 is disabled now. To adjust this,     write to the file /proc/net/accept_source_route6.

  - The random number feature in the Linux kernel 2.6 (1)     did not properly seed pools when there is no entropy, or     (2) used an incorrect cast when extracting entropy,     which might have caused the random number generator to     provide the same values after reboots on systems without     an entropy source. (CVE-2007-2453)

  - A NULL pointer dereference in SCTP connection tracking     could be caused by a remote attacker by sending     specially crafted packets. Note that this requires SCTP     set-up and active to be exploitable. (CVE-2007-2876)

  - Stack-based buffer overflow in the random number     generator (RNG) implementation in the Linux kernel     before 2.6.22 might allow local root users to cause a     denial of service or gain privileges by setting the     default wakeup threshold to a value greater than the     output pool size, which triggers writing random numbers     to the stack by the pool transfer function involving     'bound check ordering'. (CVE-2007-3105)

    Since this value can only be changed by a root user,     exploitability is low.

  - The signal handling in the Linux kernel, when run on     PowerPC systems using HTX, allows local users to cause a     denial of service via unspecified vectors involving     floating point corruption and concurrency.
    (CVE-2007-3107)

  - Memory leak in the PPP over Ethernet (PPPoE) socket     implementation in the Linux kernel allowed local users     to cause a denial of service (memory consumption) by     creating a socket using connect, and releasing it before     the PPPIOCGCHAN ioctl is initialized. (CVE-2007-2525)

  - The lcd_write function in drivers/usb/misc/usblcd.c in     the Linux kernel did not limit the amount of memory used     by a caller, which allowed local users to cause a denial     of service (memory consumption). (CVE-2007-3513)

  - A local attacker could send a death signal to a setuid     root program under certain conditions, potentially     causing unwanted behaviour in this program.
    (CVE-2007-3848)

  - On machines with a Intel i965 based graphics card local     users with access to the direct rendering devicenode     could overwrite memory on the machine and so gain root     privileges. (CVE-2007-3851)

  - Fixed a denial of service possibility where a local     attacker with access to a pwc camera device could hang     the USB subsystem. [#302194]

and the following non security bugs :

  - patches.arch/ppc-oprofile-970mp.patch: enable ppc64/970     MP, requires oprofile 0.9.3 [#252696]

  - patches.arch/x86_64-no-tsc-with-C3: don't use TSC on     x86_64 Intel systems when CPU has C3 [#254061]

  - patches.arch/x86_64-hpet-lost-interrupts-fix.patch:
    backport x86_64 hpet lost interrupts code [#257035]

  - patches.fixes/fusion-nat-consumption-fix: handle a     potential race in mptbase. This fixes a NaT consumption     crash [#257412]

  - patches.arch/ia64-skip-clock-calibration: enabled     [#259501]

  - patches.fixes/md-raid1-handle-read-error: Correctly     handle read errors from a failed drive in raid1     [#261459]

  - patches.arch/ia64-fix-kdump-on-init: kdump on INIT needs     multi-nodes sync-up (v.2) [#265764]

  - patches.arch/ia64-perfmon-fix-2: race condition between     pfm_context_create and pfm_read [#268131]

  - patches.fixes/cpufreq_ppc_boot_option.patch: workaround     for _PPC (BIOS cpufreq limitations) [#269579]

  - patches.arch/acpi_package_object_support.patch: ACPI     package object as method parameter support (in AML)     [#270956]

  - patches.fixes/ia64_cpufreq_PDC.patch: correctly assign     as cpufreq capable driver (_PDC) to BIOS [#270973]

  - patches.arch/ia64-kdump-hpzx1-ioc-workaround: update to     latest upstream version of the patch [#271158]

  - patches.suse/delayacct_memleak.patch: Fix delayacct     memory leak [#271187]

  - patches.fixes/fc_transport-check-portstate-before-scan:
    check FC portstates before invoking target scan     [#271338]

  - patches.fixes/unusual14cd.patch: quirk for 14cd:6600     [#274087]

  -     patches.fixes/reiserfs-change_generation_on_update_sd.di     ff: fix assertion failure in reiserfs [#274288]

  -     patches.drivers/d-link-dge-530t-should-use-the-skge-driv     er.patch: D-Link DGE-530T should use the skge driver     [#275376]

  - patches.arch/ia64-dont-unwind-running-tasks.patch: Only     unwind non-running tasks [#275854]

  - patches.fixes/dm-mpath-rdac-avt-support: short circuit     RDAC hardware handler in AVT mode [#277834]

  - patches.fixes/lkcd-re-enable-valid_phys_addr_range:
    re-enable the valid_phys_addr_range() check [#279433]

  - patches.drivers/cciss-panic-on-reboot: when root     filesystem is xfs the server cannot do a second reboot     [#279436] Also resolves same issue in [#291759].

  - patches.drivers/ide-hpt366-fix-302n-oops: fix hpt302n     oops [#279705]

  - patches.fixes/serial-8250-backup-timer-2-deadlock-fix:
    fix possible deadlock [#280771]

  - patches.fixes/nfs-osync-error-return: ensure proper     error return from O_SYNC writes [#280833]

  - patches.fixes/acpi_pci_hotplug_poweroff.patch: ACPI PCI     hotplug driver acpiphp unable to power off PCI slot     [#281234]

  -     patches.drivers/pci-hotplug-acpiphp-remove-hot-plug-para     meter-write-to-pci-host-bridge.patch: remove hot plug     parameter write to PCI host bridge [#281239]

  - patches.fixes/scsi-set-correct-resid: Incorrect 'resid'     field values when using a tape device [#281640]

  - patches.drivers/usb-edgeport-epic-support.patch: USB:
    add EPIC support to the io_edgeport driver [#281921]

  - patches.fixes/usb-hid-ncr-no-init-reports.patch: HID:
    Don't initialize reports for NCR devices [#281921]

  - patches.drivers/ppc-power6-ehea.patch: use decimal     values in sysfs propery logical_port_id, fix panic when     adding / removing logical eHEA ports [#283070]

  - patches.arch/ppc-power6-ebus.patch: DLPAR Adapter     add/remove functionality for eHEA [#283239]

  - patches.fixes/nfs-enospc: Return ENOSPC and EDQUOT to     NFS write requests more promptly [#284042]

  -     patches.drivers/pci-hotplug-acpiphp-avoid-acpiphp-cannot
    -get-bridge-info-pci-hotplug-failure.patch: PCI:
    hotplug: acpiphp: avoid acpiphp 'cannot get bridge info'     PCI hotplug failure [#286193]

  - patches.drivers/lpfc-8.1.10.9-update: lpfc update to     8.1.10.9 [#286223]

  - patches.fixes/make-swappiness-safer-to-use.patch: Handle     low swappiness gracefully [#288799]

  - patches.arch/ppc-oprofile-power5plusplus.patch: oprofile     support for Power 5++ [#289223]

  - patches.drivers/ppc-power6-ehea.patch: Fixed possible     kernel panic on VLAN packet recv [#289301]

  - patches.fixes/igrab_should_check_for_i_clear.patch:
    igrab() should check for I_CLEAR [#289576]

  - patches.fixes/wait_for_sysfs_population.diff: Driver     core: bus device event delay [#289964]

  -     patches.drivers/scsi-throttle-SG_DXFER_TO_FROM_DEV-warni     ng-better: better throttling of SG_DXFER_TO_FROM_DEV     warning messages [#290117]

  -     patches.arch/mark-unwind-info-for-signal-trampolines-in-     vdsos.patch: Mark unwind info for signal trampolines in     vDSOs [#291421]

  - patches.fixes/hugetlbfs-stack-grows-fix.patch: don't     allow the stack to grow into hugetlb reserved regions     [#294021]

  - patches.drivers/alsa-post-sp1-hda-analog-update: add     support of of missing AD codecs [#294471]

  - patches.drivers/alsa-post-sp1-hda-conexant-fixes: fix     unterminated arrays [#294480]

  - patches.fixes/fix_hpet_init_race.patch: fix a race in     HPET initialization on x86_64 resulting in a lockup on     boot [#295115]

  - patches.drivers/alsa-post-sp1-hda-sigmatel-pin-fix: Fix     number of pin widgets with STAC codecs [#295653]

  -     patches.fixes/pci-pcieport-driver-remove-invalid-warning
    -message.patch: PCI: pcieport-driver: remove invalid     warning message [#297135] [#298561]

  - patches.kernel.org/patch-2.6.16.NN-$((NN+1)), NN =     18,...,52: update to Kernel 2.6.16.53; lots of bugfixes     [#298719] [#186582] [#186583] [#186584]

  - patches.fixes/ocfs2-1.2-svn-r3027.diff: proactive patch     [#298845]

  - patches.drivers/b44-phy-fix: Fix frequent PHY resets     under load on b44 [#301653]

  - dd patches.arch/ppc-eeh-node-status-okay.patch firmware     returns 'okay' instead of 'ok' for node status [#301788]

Updated kernel packages that fix security issues and bugs in the Red Hat Enterprise Linux 5 kernel are now available.

This update has been rated as having important security impact by the Red Hat Security Response Team.

The Linux kernel handles the basic functions of the operating system.

These new kernel packages contain fixes for the following security issues :

* a flaw in the handling of IPv6 type 0 routing headers that allowed remote users to cause a denial of service that led to a network amplification between two routers (CVE-2007-2242, Important).

* a flaw in the nfnetlink_log netfilter module that allowed a local user to cause a denial of service (CVE-2007-1496, Important).

* a flaw in the flow list of listening IPv6 sockets that allowed a local user to cause a denial of service (CVE-2007-1592, Important).

* a flaw in the handling of netlink messages that allowed a local user to cause a denial of service (infinite recursion) (CVE-2007-1861, Important).

* a flaw in the IPv4 forwarding base that allowed a local user to cause an out-of-bounds access (CVE-2007-2172, Important).

* a flaw in the nf_conntrack netfilter module for IPv6 that allowed remote users to bypass certain netfilter rules using IPv6 fragments (CVE-2007-1497, Moderate).

In addition to the security issues described above, fixes for the following have been included :

* a regression in ipv6 routing.

* an error in memory initialization that caused gdb to output inaccurate backtraces on ia64.

* the nmi watchdog timeout was updated from 5 to 30 seconds.

* a flaw in distributed lock management that could result in errors during virtual machine migration.

* an omitted include in kernel-headers that led to compile failures for some packages.

Red Hat Enterprise Linux 5 users are advised to upgrade to these packages, which contain backported patches to correct these issues.

This kernel update fixes the following security problems :

CVE-2008-0007: Insufficient range checks in certain fault handlers could be used by local attackers to potentially read or write kernel memory.

CVE-2008-0001: Incorrect access mode checks could be used by local attackers to corrupt directory contents and so cause denial of service attacks or potentially execute code.

CVE-2007-5966: Integer overflow in the hrtimer_start function in kernel/hrtimer.c in the Linux kernel before 2.6.23.10 allows local users to execute arbitrary code or cause a denial of service (panic) via a large relative timeout value. NOTE: some of these details are obtained from third-party information.

CVE-2007-3843: The Linux kernel checked the wrong global variable for the CIFS sec mount option, which might allow remote attackers to spoof CIFS network traffic that the client configured for security signatures, as demonstrated by lack of signing despite sec=ntlmv2i in a SetupAndX request.

CVE-2007-2242: The IPv6 protocol allows remote attackers to cause a denial of service via crafted IPv6 type 0 route headers (IPV6_RTHDR_TYPE_0) that create network amplification between two routers.

CVE-2007-6417: The shmem_getpage function (mm/shmem.c) in Linux kernel 2.6.11 through 2.6.23 does not properly clear allocated memory in some rare circumstances, which might allow local users to read sensitive kernel data or cause a denial of service (crash).

CVE-2007-4308: The (1) aac_cfg_open and (2) aac_compat_ioctl functions in the SCSI layer ioctl path in aacraid in the Linux kernel did not check permissions for ioctls, which might have allowed local users to cause a denial of service or gain privileges.

CVE-2007-3740: The CIFS filesystem, when Unix extension support is enabled, does not honor the umask of a process, which allows local users to gain privileges.

CVE-2007-3848: The Linux kernel allowed local users to send arbitrary signals to a child process that is running at higher privileges by causing a setuid-root parent process to die, which delivers an attacker-controlled parent process death signal (PR_SET_PDEATHSIG).

CVE-2007-4997: Integer underflow in the ieee80211_rx function in net/ieee80211/ieee80211_rx.c in the Linux kernel allowed remote attackers to cause a denial of service (crash) via a crafted SKB length value in a runt IEEE 802.11 frame when the IEEE80211_STYPE_QOS_DATA flag is set, aka an 'off-by-two error.'

CVE-2007-6063: Buffer overflow in the isdn_net_setcfg function in isdn_net.c in the Linux kernel allowed local users to have an unknown impact via a crafted argument to the isdn_ioctl function.

CVE-none-yet: A failed change_hat call can result in an apparmored task becoming unconfined (326546).

and the following non security bugs :

  - patches.suse/apparmor-r206-310260.diff: AppArmor - add     audit capability names (310260).

  - patches.suse/apparmor-r326-240982.diff: AppArmor - fix     memory corruption if policy load fails (240982).

  - patches.suse/apparmor-r400-221567.diff: AppArmor -     kernel dead locks when audit back log occurs (221567).

  - patches.suse/apparmor-r405-247679.diff: AppArmor -     apparmor fails to log link reject in complain mode     (247679).

  - patches.suse/apparmor-r473-326556.diff: AppArmor - fix     race on ambiguous deleted file name (326556).

  - patches.suse/apparmor-r479-257748.diff: AppArmor - fix     kernel crash that can occur on profile removal (257748).

  - patches.fixes/usb_unusual_292931.diff: add quirk needed     for 1652:6600 (292931).

  - patches.drivers/r8169-perform-a-PHY-reset-before.patch:
    r8169: perform a PHY reset before any other operation at     boot time (345658).

  - patches.drivers/r8169-more-alignment-for-the-0x8168:
    refresh.

  - patches.fixes/usb_336850.diff: fix missing quirk leading     to a device disconnecting under load (336850).

  - patches.fixes/avm-fix-capilib-locking: [ISDN] Fix random     hard freeze with AVM cards. (#341894)

A buffer overflow was discovered in the Moxa serial driver. Local attackers could execute arbitrary code and gain root privileges.
(CVE-2005-0504)

A flaw was discovered in the IPv6 stack's handling of type 0 route headers. By sending a specially crafted IPv6 packet, a remote attacker could cause a denial of service between two IPv6 hosts.
(CVE-2007-2242)

A flaw in the sysfs_readdir function allowed a local user to cause a denial of service by dereferencing a NULL pointer. (CVE-2007-3104)

A buffer overflow was discovered in the random number generator. In environments with granular assignment of root privileges, a local attacker could gain additional privileges. (CVE-2007-3105)

It was discovered that certain setuid-root processes did not correctly reset process death signal handlers. A local user could manipulate this to send signals to processes they would not normally have access to. (CVE-2007-3848)

It was discovered that the aacraid SCSI driver did not correctly check permissions on certain ioctls. A local attacker could cause a denial of service or gain privileges. (CVE-2007-4308).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The compat_sys_mount function allowed local users to cause a denial of service when mounting a smbfs filesystem in compatibility mode.
(CVE-2006-7203)

The Omnikey CardMan 4040 driver (cm4040_cs) did not limit the size of buffers passed to read() and write(). A local attacker could exploit this to execute arbitrary code with kernel privileges. (CVE-2007-0005)

Due to a variable handling flaw in the ipv6_getsockopt_sticky() function a local attacker could exploit the getsockopt() calls to read arbitrary kernel memory. This could disclose sensitive data.
(CVE-2007-1000)

Ilja van Sprundel discovered that Bluetooth setsockopt calls could leak kernel memory contents via an uninitialized stack buffer. A local attacker could exploit this flaw to view sensitive kernel information.
(CVE-2007-1353)

A flaw was discovered in the handling of netlink messages. Local attackers could cause infinite recursion leading to a denial of service. (CVE-2007-1861)

A flaw was discovered in the IPv6 stack's handling of type 0 route headers. By sending a specially crafted IPv6 packet, a remote attacker could cause a denial of service between two IPv6 hosts.
(CVE-2007-2242)

The random number generator was hashing a subset of the available entropy, leading to slightly less random numbers. Additionally, systems without an entropy source would be seeded with the same inputs at boot time, leading to a repeatable series of random numbers.
(CVE-2007-2453)

A flaw was discovered in the PPP over Ethernet implementation. Local attackers could manipulate ioctls and cause kernel memory consumption leading to a denial of service. (CVE-2007-2525)

An integer underflow was discovered in the cpuset filesystem. If mounted, local attackers could obtain kernel memory using large file offsets while reading the tasks file. This could disclose sensitive data. (CVE-2007-2875)

Vilmos Nebehaj discovered that the SCTP netfilter code did not correctly validate certain states. A remote attacker could send a specially crafted packet causing a denial of service. (CVE-2007-2876)

Luca Tettamanti discovered a flaw in the VFAT compat ioctls on 64-bit systems. A local attacker could corrupt a kernel_dirent struct and cause a denial of service. (CVE-2007-2878).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This kernel update brings the kernel to the one shipped with SLES 10 Service Pack 1 and also fixes the following security problems:

- CVE-2007-2242: The IPv6 protocol allows remote attackers   to cause a denial of service via crafted IPv6 type 0   route headers (IPV6_RTHDR_TYPE_0) that create network   amplification between two routers. 

  The default is that RH0 is disabled now. To adjust this, write to the file /proc/net/accept_source_route6.

- CVE-2007-2453: The random number feature in the Linux   kernel 2.6 (1) did not properly seed pools when there is   no entropy, or (2) used an incorrect cast when extracting   entropy, which might have caused the random number   generator to provide the same values after reboots on   systems without an entropy source.

- CVE-2007-2876: A NULL pointer dereference in SCTP   connection tracking could be caused by a remote attacker   by sending specially crafted packets. Note that this   requires SCTP set-up and active to be exploitable.

- CVE-2007-3105: Stack-based buffer overflow in the random   number generator (RNG) implementation in the Linux kernel   before 2.6.22 might allow local root users to cause a   denial of service or gain privileges by setting the   default wakeup threshold to a value greater than the   output pool size, which triggers writing random numbers   to the stack by the pool transfer function involving   'bound check ordering'.

  Since this value can only be changed by a root user, exploitability is low.

- CVE-2007-3107: The signal handling in the Linux kernel,   when run on PowerPC systems using HTX, allows local users   to cause a denial of service via unspecified vectors   involving floating point corruption and concurrency.

- CVE-2007-2525: Memory leak in the PPP over Ethernet   (PPPoE) socket implementation in the Linux kernel allowed   local users to cause a denial of service (memory   consumption) by creating a socket using connect, and   releasing it before the PPPIOCGCHAN ioctl is initialized.

- CVE-2007-3513: The lcd_write function in   drivers/usb/misc/usblcd.c in the Linux kernel did not   limit the amount of memory used by a caller, which   allowed local users to cause a denial of service (memory   consumption).

- CVE-2007-3851: On machines with a Intel i965 based   graphics card local users with access to the direct   rendering devicenode could overwrite memory on the   machine and so gain root privileges.

This kernel is not compatible to the previous SUSE Linux 10.1 kernel, so the Kernel Module Packages will need to be updated.

This kernel update fixes the following security problems :

  - CVE-2007-1861: The nl_fib_lookup function in     net/ipv4/fib_frontend.c allows attackers to cause a     denial of service (kernel panic) via NETLINK_FIB_LOOKUP     replies, which trigger infinite recursion and a stack     overflow.

  - CVE-2007-1496: nfnetlink_log in netfilter allows     attackers to cause a denial of service (crash) via     unspecified vectors involving the (1) nfulnl_recv_config     function, (2) using 'multiple packets per netlink     message', and (3) bridged packets, which trigger a NULL     pointer dereference.

  - CVE-2007-1497: nf_conntrack in netfilter does not set     nfctinfo during reassembly of fragmented packets, which     leaves the default value as IP_CT_ESTABLISHED and might     allow remote attackers to bypass certain rulesets using     IPv6 fragments.

    Please note that the connection tracking option for IPv6     is not enabled in any currently shipping SUSE Linux     kernel, so it does not affect SUSE Linux default     kernels.

  - CVE-2007-2242: The IPv6 protocol allows remote attackers     to cause a denial of service via crafted IPv6 type 0     route headers (IPV6_RTHDR_TYPE_0) that create network     amplification between two routers.

    The behaviour has been disabled by default, and the     patch introduces a new sysctl with which the     administrator can reenable it again.

  - CVE-2006-7203: The compat_sys_mount function in     fs/compat.c allows local users to cause a denial of     service (NULL pointer dereference and oops) by mounting     a smbfs file system in compatibility mode ('mount -t     smbfs').

  - CVE-2007-2453: Seeding of the kernel random generator on     boot did not work correctly due to a programming mistake     and so the kernel might have more predictable random     numbers than assured.

  - CVE-2007-2876: A NULL pointer dereference in SCTP     connection tracking could be caused by a remote attacker     by sending specially crafted packets. Note that this     requires SCTP set-up and active to be exploitable.

and the following non security bugs :

    - patches.fixes/cpufreq_fix_limited_on_battery.patch:
      Fix limited freq when booted on battery. [#231107]

    - patches.fixes/usb-keyspan-regression-fix.patch: USB:
      keyspan regression fix [#240919]

  - -     patches.fixes/hpt366-dont-check-enablebits-for-hpt36x.pa     tch: hpt366: don't check enablebits for HPT36x [#278696]

Some vulnerabilities were discovered and corrected in the Linux 2.6 kernel :

The Linux kernel did not properly save or restore EFLAGS during a context switch, or reset the flags when creating new threads, which allowed local users to cause a denial of service (process crash) (CVE-2006-5755).

The compat_sys_mount function in fs/compat.c allowed local users to cause a denial of service (NULL pointer dereference and oops) by mounting a smbfs file system in compatibility mode (CVE-2006-7203).

The nfnetlink_log function in netfilter allowed an attacker to cause a denial of service (crash) via unspecified vectors which would trigger a NULL pointer dereference (CVE-2007-1496).

The nf_conntrack function in netfilter did not set nfctinfo during reassembly of fragmented packets, which left the default value as IP_CT_ESTABLISHED and could allow remote attackers to bypass certain rulesets using IPv6 fragments (CVE-2007-1497).

The netlink functionality did not properly handle NETLINK_FIB_LOOKUP replies, which allowed a remote attacker to cause a denial of service (resource consumption) via unspecified vectors, probably related to infinite recursion (CVE-2007-1861).

A typo in the Linux kernel caused RTA_MAX to be used as an array size instead of RTN_MAX, which lead to an out of bounds access by certain functions (CVE-2007-2172).

The IPv6 protocol allowed remote attackers to cause a denial of service via crafted IPv6 type 0 route headers that create network amplification between two routers (CVE-2007-2242).

The random number feature did not properly seed pools when there was no entropy, or used an incorrect cast when extracting entropy, which could cause the random number generator to provide the same values after reboots on systems without an entropy source (CVE-2007-2453).

A memory leak in the PPPoE socket implementation allowed local users to cause a denial of service (memory consumption) by creating a socket using connect, and releasing it before the PPPIOCGCHAN ioctl is initialized (CVE-2007-2525).

An integer underflow in the cpuset_tasks_read function, when the cpuset filesystem is mounted, allowed local users to obtain kernel memory contents by using a large offset when reading the /dev/cpuset/tasks file (CVE-2007-2875).

The sctp_new function in netfilter allowed remote attackers to cause a denial of service by causing certain invalid states that triggered a NULL pointer dereference (CVE-2007-2876).

In addition to these security fixes, other fixes have been included such as :

  - Fix crash on netfilter when nfnetlink_log is used on     certain hooks on packets forwarded to or from a bridge

  - Fixed busy sleep on IPVS which caused high load averages

    - Fixed possible race condition on ext[34]_link

    - Fixed missing braces in condition block that led to       wrong behaviour in NFS

  - Fixed XFS lock deallocation that resulted in oops when     unmounting

To update your kernel, please follow the directions located at :

http://www.mandriva.com/en/security/kernelupdate

The remote host is running a version of Mac OS X 10.4.x that is prior to 10.4.10. 

This update a security fix for IPv6 type 0 routing headers, which might be abused by an attacker to consume excessive bandwidth.

ID	Name	Product	Family	Severity
67495	Oracle Linux 5 : Important: / kernel (ELSA-2007-0347)	Nessus	Oracle Linux Local Security Checks	medium
60181	Scientific Linux Security Update : kernel on SL5.x i386/x86_64	Nessus	Scientific Linux Local Security Checks	high
59123	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 4186)	Nessus	SuSE Local Security Checks	high
43641	CentOS 5 : kernel (CESA-2007:0347)	Nessus	CentOS Local Security Checks	high
30142	openSUSE 10 Security Update : kernel (kernel-4929)	Nessus	SuSE Local Security Checks	high
29487	SuSE 10 Security Update : Linux kernel (ZYPP Patch Number 4185)	Nessus	SuSE Local Security Checks	high
28112	Ubuntu 6.06 LTS : linux-source-2.6.15 vulnerabilities (USN-508-1)	Nessus	Ubuntu Local Security Checks	high
28087	Ubuntu 6.10 : linux-source-2.6.17 vulnerabilities (USN-486-1)	Nessus	Ubuntu Local Security Checks	high
27296	SuSE Security Update: Kernel Update for SUSE Linux 10.1 (kernel-4193)	Nessus	SuSE Local Security Checks	high
27295	openSUSE 10 Security Update : kernel (kernel-3760)	Nessus	SuSE Local Security Checks	high
25968	Mandrake Linux Security Advisory : kernel (MDKSA-2007:171)	Nessus	Mandriva Local Security Checks	high
25554	Mac OS X 10.4.x < 10.4.10 IPv6 Type 0 Route Headers DoS	Nessus	MacOS X Local Security Checks	high
25333	RHEL 5 : kernel (RHSA-2007:0347)	Nessus	Red Hat Local Security Checks	high

Detections

Analytics

CVE-2007-2242

high

Tenable Plugins

medium

high

high

high

high

high

high

high

high

high

high

high

high