The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2013:1645 advisory.

    The kernel packages contain the Linux kernel, the core of any Linux     operating system.

    This update fixes the following security issues:

    * A flaw was found in the way the Linux kernel's IPv6 implementation     handled certain UDP packets when the UDP Fragmentation Offload (UFO)     feature was enabled. A remote attacker could use this flaw to crash the     system or, potentially, escalate their privileges on the system.
    (CVE-2013-4387, Important)

    * A flaw was found in the way the Linux kernel handled the creation of     temporary IPv6 addresses. If the IPv6 privacy extension was enabled     (/proc/sys/net/ipv6/conf/eth0/use_tempaddr set to '2'), an attacker on the     local network could disable IPv6 temporary address generation, leading to a     potential information disclosure. (CVE-2013-0343, Moderate)

    * A flaw was found in the way the Linux kernel handled HID (Human Interface     Device) reports with an out-of-bounds Report ID. An attacker with physical     access to the system could use this flaw to crash the system or,     potentially, escalate their privileges on the system. (CVE-2013-2888,     Moderate)

    * An off-by-one flaw was found in the way the ANSI CPRNG implementation in     the Linux kernel processed non-block size aligned requests. This could lead     to random numbers being generated with less bits of entropy than expected     when ANSI CPRNG was used. (CVE-2013-4345, Moderate)

    * It was found that the fix for CVE-2012-2375 released via RHSA-2012:1580     accidentally removed a check for small-sized result buffers. A local,     unprivileged user with access to an NFSv4 mount with ACL support could use     this flaw to crash the system or, potentially, escalate their privileges on     the system . (CVE-2013-4591, Moderate)

    * A flaw was found in the way IOMMU memory mappings were handled when     moving memory slots. A malicious user on a KVM host who has the ability to     assign a device to a guest could use this flaw to crash the host.
    (CVE-2013-4592, Moderate)

    * Heap-based buffer overflow flaws were found in the way the Zeroplus and     Pantherlord/GreenAsia game controllers handled HID reports. An attacker     with physical access to the system could use these flaws to crash the     system or, potentially, escalate their privileges on the system.
    (CVE-2013-2889, CVE-2013-2892, Moderate)

    * Two information leak flaws were found in the logical link control (LLC)     implementation in the Linux kernel. A local, unprivileged user could use     these flaws to leak kernel stack memory to user space. (CVE-2012-6542,     CVE-2013-3231, Low)

    * A heap-based buffer overflow in the way the tg3 Ethernet driver parsed     the vital product data (VPD) of devices could allow an attacker with     physical access to a system to cause a denial of service or, potentially,     escalate their privileges. (CVE-2013-1929, Low)

    * Information leak flaws in the Linux kernel could allow a privileged,     local user to leak kernel memory to user space. (CVE-2012-6545,     CVE-2013-1928, CVE-2013-2164, CVE-2013-2234, Low)

    * A format string flaw was found in the Linux kernel's block layer.
    A privileged, local user could potentially use this flaw to escalate their     privileges to kernel level (ring0). (CVE-2013-2851, Low)

    Red Hat would like to thank Stephan Mueller for reporting CVE-2013-4345,     and Kees Cook for reporting CVE-2013-2851.

    This update also fixes several hundred bugs and adds enhancements. Refer to     the Red Hat Enterprise Linux 6.5 Release Notes for information on the most     significant of these changes, and the Technical Notes for further     information, both linked to in the References.

    All Red Hat Enterprise Linux 6 users are advised to install these updated     packages, which correct these issues, and fix the bugs and add the     enhancements noted in the Red Hat Enterprise Linux 6.5 Release Notes and     Technical Notes. The system must be rebooted for this update to take     effect.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

This update fixes the following security issues :

  - A flaw was found in the way the Linux kernel's IPv6     implementation handled certain UDP packets when the UDP     Fragmentation Offload (UFO) feature was enabled. A     remote attacker could use this flaw to crash the system     or, potentially, escalate their privileges on the     system. (CVE-2013-4387, Important)

  - A flaw was found in the way the Linux kernel handled the     creation of temporary IPv6 addresses. If the IPv6     privacy extension was enabled     (/proc/sys/net/ipv6/conf/eth0/use_tempaddr set to '2'),     an attacker on the local network could disable IPv6     temporary address generation, leading to a potential     information disclosure. (CVE-2013-0343, Moderate)

  - A flaw was found in the way the Linux kernel handled HID     (Human Interface Device) reports with an out-of-bounds     Report ID. An attacker with physical access to the     system could use this flaw to crash the system or,     potentially, escalate their privileges on the system.
    (CVE-2013-2888, Moderate)

  - An off-by-one flaw was found in the way the ANSI CPRNG     implementation in the Linux kernel processed non-block     size aligned requests. This could lead to random numbers     being generated with less bits of entropy than expected     when ANSI CPRNG was used. (CVE-2013-4345, Moderate)

  - It was found that the fix for CVE-2012-2375 released via     SLSA-2012:1580 accidentally removed a check for     small-sized result buffers. A local, unprivileged user     with access to an NFSv4 mount with ACL support could use     this flaw to crash the system or, potentially, escalate     their privileges on the system . (CVE-2013-4591,     Moderate)

  - A flaw was found in the way IOMMU memory mappings were     handled when moving memory slots. A malicious user on a     KVM host who has the ability to assign a device to a     guest could use this flaw to crash the host.
    (CVE-2013-4592, Moderate)

  - Heap-based buffer overflow flaws were found in the way     the Zeroplus and Pantherlord/GreenAsia game controllers     handled HID reports. An attacker with physical access to     the system could use these flaws to crash the system or,     potentially, escalate their privileges on the system.
    (CVE-2013-2889, CVE-2013-2892, Moderate)

  - Two information leak flaws were found in the logical     link control (LLC) implementation in the Linux kernel. A     local, unprivileged user could use these flaws to leak     kernel stack memory to user space. (CVE-2012-6542,     CVE-2013-3231, Low)

  - A heap-based buffer overflow in the way the tg3 Ethernet     driver parsed the vital product data (VPD) of devices     could allow an attacker with physical access to a system     to cause a denial of service or, potentially, escalate     their privileges. (CVE-2013-1929, Low)

  - Information leak flaws in the Linux kernel could allow a     privileged, local user to leak kernel memory to user     space. (CVE-2012-6545, CVE-2013-1928, CVE-2013-2164,     CVE-2013-2234, Low)

  - A format string flaw was found in the Linux kernel's     block layer. A privileged, local user could potentially     use this flaw to escalate their privileges to kernel     level (ring0). (CVE-2013-2851, Low)

The system must be rebooted for this update to take effect.

The remote Oracle Linux 5 / 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2013-2525 advisory.

    - net: fix incorrect credentials passing (Linus Torvalds) [Orabug: 16836975] {CVE-2013-1979}
    - tg3: fix length overflow in VPD firmware parsing (Kees Cook) [Orabug: 16836958] {CVE-2013-1929}
    - USB: cdc-wdm: fix buffer overflow (Oliver Neukum) [Orabug: 16836943] {CVE-2013-1860}
    - ext3: Fix format string issues (Lars-Peter Clausen) [Orabug: 16836934] {CVE-2013-1848}
    - perf: Treat attr.config as u64 in perf_swevent_init() (Tommi Rantala) [Orabug: 16808734] {CVE-2013-2094}
    - block: default SCSI command filter does not accomodate commands overlap across device classes (Jamie     Iles) [Orabug: 16387137] {CVE-2012-4542}
    - KVM: x86: Convert MSR_KVM_SYSTEM_TIME to use gfn_to_hva_cache functions (CVE-2013-1797) (Andy Honig)     [Orabug: 16711660] {CVE-2013-1797}
    - Bluetooth: Fix incorrect strncpy() in hidp_setup_hid() (Anderson Lizardo) [Orabug: 16711065]     {CVE-2013-0349}
    - USB: io_ti: Fix NULL dereference in chase_port() (Wolfgang Frisch) [Orabug: 16425358] {CVE-2013-1774}
    - keys: fix race with concurrent install_user_keyrings() (David Howells) [Orabug: 16493354]     {CVE-2013-1792}
    - KVM: Fix bounds checking in ioapic indirect register reads (CVE-2013-1798) (Andy Honig) [Orabug:
    16710951] {CVE-2013-1798}
    - KVM: x86: fix for buffer overflow in handling of MSR_KVM_SYSTEM_TIME (CVE-2013-1796) (Andy Honig)     [Orabug: 16710806] {CVE-2013-1796}
    - llc: fix info leak via getsockname() (Mathias Krause) [Orabug: 16675488] {CVE-2012-6542}

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.

ID	Name	Product	Family	Published	Updated	Severity
71013	RHEL 6 : Red Hat Enterprise Linux 6 kernel update (Important) (RHSA-2013:1645)	Nessus	Red Hat Local Security Checks	11/21/2013	3/20/2025	medium
71490	Scientific Linux Security Update : kernel on SL6.x i386/x86_64 (20131121)	Nessus	Scientific Linux Local Security Checks	12/17/2013	1/14/2021	medium
68855	Oracle Linux 5 / 6 : Unbreakable Enterprise kernel Security (ELSA-2013-2525)	Nessus	Oracle Linux Local Security Checks	7/12/2013	2/9/2026	high

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