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USN-2049-1: Linux kernel vulnerabilities

7 December 2013

Several security issues were fixed in the kernel.

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Releases

Packages

Details

Miroslav Vadkerti discovered a flaw in how the permissions for network
sysctls are handled in the Linux kernel. An unprivileged local user could
exploit this flaw to have privileged access to files in /proc/sys/net/.
(CVE-2013-4270)

A flaw was discovered in the Linux kernel's dm snapshot facility. A remote
authenticated user could exploit this flaw to obtain sensitive information
or modify/corrupt data. (CVE-2013-4299)

Wannes Rombouts reported a vulnerability in the networking tuntap interface
of the Linux kernel. A local user with the CAP_NET_ADMIN capability could
leverage this flaw to gain full admin privileges. (CVE-2013-4343)

Alan Chester reported a flaw in the IPv6 Stream Control Transmission
Protocol (SCTP) of the Linux kernel. A remote attacker could exploit this
flaw to obtain sensitive information by sniffing network traffic.
(CVE-2013-4350)

Dmitry Vyukov reported a flaw in the Linux kernel's handling of IPv6 UDP
Fragmentation Offload (UFO) processing. A remote attacker could leverage
this flaw to cause a denial of service (system crash). (CVE-2013-4387)

Hannes Frederic Sowa discovered a flaw in the Linux kernel's UDP
Fragmentation Offload (UFO). An unprivileged local user could exploit this
flaw to cause a denial of service (system crash) or possibly gain
administrative privileges. (CVE-2013-4470)

A flaw was discovered in the Linux kernel's fib6 error-code encoding for
IPv6. A local user with the CAT_NET_ADMIN capability could exploit this
flaw to cause a denial of service (system crash). (CVE-2013-6431)

Evan Huus reported a buffer overflow in the Linux kernel's radiotap header
parsing. A remote attacker could cause a denial of service (buffer over-
read) via a specially crafted header. (CVE-2013-7027)

An information leak was discovered in the Linux kernel's SIOCWANDEV ioctl
call. A local user with the CAP_NET_ADMIN capability could exploit this
flaw to obtain potentially sensitive information from kernel memory.
(CVE-2014-1444)

An information leak was discovered in the wanxl ioctl function the Linux
kernel. A local user could exploit this flaw to obtain potentially
sensitive information from kernel memory. (CVE-2014-1445)

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Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

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Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 13.10

After a standard system update you need to reboot your computer to make
all the necessary changes.

ATTENTION: Due to an unavoidable ABI change the kernel updates have
been given a new version number, which requires you to recompile and
reinstall all third party kernel modules you might have installed. If
you use linux-restricted-modules, you have to update that package as
well to get modules which work with the new kernel version. Unless you
manually uninstalled the standard kernel metapackages (e.g. linux-generic,
linux-server, linux-powerpc), a standard system upgrade will automatically
perform this as well.

References

Related notices

  • USN-2023-1: linux, linux-image-3.8.0-33-generic
  • USN-2020-1: linux-lts-raring, linux-image-3.8.0-33-generic
  • USN-2046-1: linux-image-3.5.0-236-omap4, linux-ti-omap4
  • USN-2041-1: linux-lts-raring, linux-image-3.8.0-34-generic
  • USN-2067-1: linux-image-3.2.0-1442-omap4, linux-ti-omap4
  • USN-2042-1: linux-image-3.11.0-14-generic, linux-image-3.11.0-14-generic-lpae, linux-lts-saucy
  • USN-2066-1: linux-image-3.2.0-58-powerpc-smp, linux, linux-image-3.2.0-58-generic-pae, linux-image-3.2.0-58-highbank, linux-image-3.2.0-58-virtual, linux-image-3.2.0-58-powerpc64-smp, linux-image-3.2.0-58-omap, linux-image-3.2.0-58-generic
  • USN-2045-1: linux, linux-image-3.8.0-34-generic
  • USN-2043-1: linux, linux-image-3.5.0-44-omap, linux-image-3.5.0-44-powerpc-smp, linux-image-3.5.0-44-powerpc64-smp, linux-image-3.5.0-44-generic, linux-image-3.5.0-44-highbank
  • USN-2016-1: linux-ec2, linux-image-2.6.32-358-ec2
  • USN-2040-1: linux-image-3.5.0-44-generic, linux-lts-quantal
  • USN-2015-1: linux-image-2.6.32-53-sparc64-smp, linux, linux-image-2.6.32-53-generic-pae, linux-image-2.6.32-53-ia64, linux-image-2.6.32-53-sparc64, linux-image-2.6.32-53-versatile, linux-image-2.6.32-53-lpia, linux-image-2.6.32-53-powerpc64-smp, linux-image-2.6.32-53-powerpc, linux-image-2.6.32-53-preempt, linux-image-2.6.32-53-virtual, linux-image-2.6.32-53-generic, linux-image-2.6.32-53-powerpc-smp, linux-image-2.6.32-53-server, linux-image-2.6.32-53-386
  • USN-2050-1: linux-image-3.5.0-236-omap4, linux-ti-omap4
  • USN-2044-1: linux-image-3.5.0-236-omap4, linux-ti-omap4
  • USN-2019-1: linux-image-3.5.0-43-generic, linux-lts-quantal
  • USN-2038-1: linux-image-3.2.0-57-virtual, linux-image-3.2.0-57-generic, linux, linux-image-3.2.0-57-highbank, linux-image-3.2.0-57-generic-pae, linux-image-3.2.0-57-omap, linux-image-3.2.0-57-powerpc-smp, linux-image-3.2.0-57-powerpc64-smp
  • USN-2021-1: linux-image-3.5.0-43-powerpc-smp, linux, linux-image-3.5.0-43-powerpc64-smp, linux-image-3.5.0-43-highbank, linux-image-3.5.0-43-omap, linux-image-3.5.0-43-generic
  • USN-2022-1: linux-image-3.5.0-235-omap4, linux-ti-omap4
  • USN-2039-1: linux-image-3.2.0-1441-omap4, linux-ti-omap4
  • USN-2024-1: linux-image-3.5.0-235-omap4, linux-ti-omap4
  • USN-2234-1: linux-image-2.6.32-365-ec2, linux-ec2
  • USN-2233-1: linux-image-2.6.32-61-ia64, linux-image-2.6.32-61-generic-pae, linux-image-2.6.32-61-sparc64-smp, linux-image-2.6.32-61-386, linux, linux-image-2.6.32-61-sparc64, linux-image-2.6.32-61-powerpc64-smp, linux-image-2.6.32-61-generic, linux-image-2.6.32-61-preempt, linux-image-2.6.32-61-powerpc-smp, linux-image-2.6.32-61-server, linux-image-2.6.32-61-powerpc, linux-image-2.6.32-61-lpia, linux-image-2.6.32-61-virtual, linux-image-2.6.32-61-versatile
  • USN-2069-1: linux-image-3.8.0-35-generic, linux-lts-raring
  • USN-2073-1: linux-image-3.8.0-35-generic, linux
  • USN-2071-1: linux, linux-image-3.5.0-45-powerpc64-smp, linux-image-3.5.0-45-powerpc-smp, linux-image-3.5.0-45-omap, linux-image-3.5.0-45-generic, linux-image-3.5.0-45-highbank
  • USN-2129-1: linux-image-2.6.32-362-ec2, linux-ec2
  • USN-2128-1: linux-image-2.6.32-57-virtual, linux-image-2.6.32-57-server, linux-image-2.6.32-57-generic-pae, linux-image-2.6.32-57-sparc64-smp, linux, linux-image-2.6.32-57-powerpc, linux-image-2.6.32-57-ia64, linux-image-2.6.32-57-lpia, linux-image-2.6.32-57-generic, linux-image-2.6.32-57-sparc64, linux-image-2.6.32-57-386, linux-image-2.6.32-57-versatile, linux-image-2.6.32-57-preempt, linux-image-2.6.32-57-powerpc64-smp, linux-image-2.6.32-57-powerpc-smp
  • USN-2074-1: linux-image-3.5.0-237-omap4, linux-ti-omap4
  • USN-2076-1: linux-image-3.5.0-237-omap4, linux-ti-omap4
  • USN-2068-1: linux-image-3.5.0-45-generic, linux-lts-quantal
  • USN-2072-1: linux-image-3.5.0-237-omap4, linux-ti-omap4

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