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centosCentOS ProjectCESA-2013:1645
HistoryNov 26, 2013 - 1:32 p.m.

kernel, perf, python security update

2013-11-2613:32:01
CentOS Project
lists.centos.org
50

6.2 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

0.029 Low

EPSS

Percentile

90.6%

CentOS Errata and Security Advisory CESA-2013:1645

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2013-November/027246.html

Affected packages:
kernel
kernel-abi-whitelists
kernel-debug
kernel-debug-devel
kernel-devel
kernel-doc
kernel-firmware
kernel-headers
perf
python-perf

Upstream details at:
https://access.redhat.com/errata/RHSA-2013:1645

6.2 Medium

CVSS2

Access Vector

LOCAL

Access Complexity

HIGH

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:L/AC:H/Au:N/C:C/I:C/A:C

0.029 Low

EPSS

Percentile

90.6%

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