Ubuntu 10.04 LTS : linux-lts-backport-natty vulnerabilities (USN-1256-1)

Ubuntu Security Notice (C) 2011-2014 Canonical, Inc. / NASL script (C) 2011-2014 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

It was discovered that the /proc filesystem did not correctly handle
permission changes when programs executed. A local attacker could hold
open files to examine details about programs running with higher
privileges, potentially increasing the chances of exploiting
additional vulnerabilities. (CVE-2011-1020)

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly
clear memory. A local attacker could exploit this to read kernel stack
memory, leading to a loss of privacy. (CVE-2011-1078)

Vasiliy Kulikov discovered that the Bluetooth stack did not correctly
check that device name strings were NULL terminated. A local attacker
could exploit this to crash the system, leading to a denial of
service, or leak contents of kernel stack memory, leading to a loss of
privacy. (CVE-2011-1079)

Vasiliy Kulikov discovered that bridge network filtering did not check
that name fields were NULL terminated. A local attacker could exploit
this to leak contents of kernel stack memory, leading to a loss of
privacy. (CVE-2011-1080)

Johan Hovold discovered that the DCCP network stack did not correctly
handle certain packet combinations. A remote attacker could send
specially crafted network traffic that would crash the system, leading
to a denial of service. (CVE-2011-1093)

Peter Huewe discovered that the TPM device did not correctly
initialize memory. A local attacker could exploit this to read kernel
heap memory contents, leading to a loss of privacy. (CVE-2011-1160)

Dan Rosenberg discovered that the IRDA subsystem did not correctly
check certain field sizes. If a system was using IRDA, a remote
attacker could send specially crafted traffic to crash the system or
gain root privileges. (CVE-2011-1180)

Ryan Sweat discovered that the GRO code did not correctly validate
memory. In some configurations on systems using VLANs, a remote
attacker could send specially crafted traffic to crash the system,
leading to a denial of service. (CVE-2011-1478)

It was discovered that the security fix for CVE-2010-4250 introduced a
regression. A remote attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2011-1479)

Dan Rosenberg discovered that the X.25 Rose network stack did not
correctly handle certain fields. If a system was running with Rose
enabled, a remote attacker could send specially crafted traffic to
gain root privileges. (CVE-2011-1493)

It was discovered that the Stream Control Transmission Protocol (SCTP)
implementation incorrectly calculated lengths. If the
net.sctp.addip_enable variable was turned on, a remote attacker could
send specially crafted traffic to crash the system. (CVE-2011-1573)

Ryan Sweat discovered that the kernel incorrectly handled certain VLAN
packets. On some systems, a remote attacker could send specially
crafted traffic to crash the system, leading to a denial of service.
(CVE-2011-1576)

Timo Warns discovered that the GUID partition parsing routines did not
correctly validate certain structures. A local attacker with physical
access could plug in a specially crafted block device to crash the
system, leading to a denial of service. (CVE-2011-1577)

Phil Oester discovered that the network bonding system did not
correctly handle large queues. On some systems, a remote attacker
could send specially crafted traffic to crash the system, leading to a
denial of service. (CVE-2011-1581)

It was discovered that CIFS incorrectly handled authentication. When a
user had a CIFS share mounted that required authentication, a local
user could mount the same share without knowing the correct password.
(CVE-2011-1585)

It was discovered that the GRE protocol incorrectly handled netns
initialization. A remote attacker could send a packet while the ip_gre
module was loading, and crash the system, leading to a denial of
service. (CVE-2011-1767)

It was discovered that the IP/IP protocol incorrectly handled netns
initialization. A remote attacker could send a packet while the ipip
module was loading, and crash the system, leading to a denial of
service. (CVE-2011-1768)

Ben Greear discovered that CIFS did not correctly handle direct I/O. A
local attacker with access to a CIFS partition could exploit this to
crash the system, leading to a denial of service. (CVE-2011-1771)

Timo Warns discovered that the EFI GUID partition table was not
correctly parsed. A physically local attacker that could insert
mountable devices could exploit this to crash the system or possibly
gain root privileges. (CVE-2011-1776)

Vasiliy Kulikov and Dan Rosenberg discovered that ecryptfs did not
correctly check the origin of mount points. A local attacker could
exploit this to trick the system into unmounting arbitrary mount
points, leading to a denial of service. (CVE-2011-1833)

Ben Hutchings reported a flaw in the kernel's handling of corrupt LDM
partitions. A local user could exploit this to cause a denial of
service or escalate privileges. (CVE-2011-2182)

Dan Rosenberg discovered that the IPv4 diagnostic routines did not
correctly validate certain requests. A local attacker could exploit
this to consume CPU resources, leading to a denial of service.
(CVE-2011-2213)

It was discovered that an mmap() call with the MAP_PRIVATE flag on
'/dev/zero' was incorrectly handled. A local attacker could exploit
this to crash the system, leading to a denial of service.
(CVE-2011-2479)

Vasiliy Kulikov discovered that taskstats listeners were not correctly
handled. A local attacker could exploit this to exhaust memory and CPU
resources, leading to a denial of service. (CVE-2011-2484)

It was discovered that Bluetooth l2cap and rfcomm did not correctly
initialize structures. A local attacker could exploit this to read
portions of the kernel stack, leading to a loss of privacy.
(CVE-2011-2492)

Sami Liedes discovered that ext4 did not correctly handle missing root
inodes. A local attacker could trigger the mount of a specially
crafted filesystem to cause the system to crash, leading to a denial
of service. (CVE-2011-2493)

Robert Swiecki discovered that mapping extensions were incorrectly
handled. A local attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2011-2496)

Dan Rosenberg discovered that the Bluetooth stack incorrectly handled
certain L2CAP requests. If a system was using Bluetooth, a remote
attacker could send specially crafted traffic to crash the system or
gain root privileges. (CVE-2011-2497)

Ben Pfaff discovered that Classless Queuing Disciplines (qdiscs) were
being incorrectly handled. A local attacker could exploit this to
crash the system, leading to a denial of service. (CVE-2011-2525)

It was discovered that GFS2 did not correctly check block sizes. A
local attacker could exploit this to crash the system, leading to a
denial of service. (CVE-2011-2689)

It was discovered that the EXT4 filesystem contained multiple
off-by-one flaws. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2011-2695)

Fernando Gont discovered that the IPv6 stack used predictable fragment
identification numbers. A remote attacker could exploit this to
exhaust network resources, leading to a denial of service.
(CVE-2011-2699)

Mauro Carvalho Chehab discovered that the si4713 radio driver did not
correctly check the length of memory copies. If this hardware was
available, a local attacker could exploit this to crash the system or
gain root privileges. (CVE-2011-2700)

Herbert Xu discovered that certain fields were incorrectly handled
when Generic Receive Offload (CVE-2011-2723)

The performance counter subsystem did not correctly handle certain
counters. A local attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2011-2918)

Time Warns discovered that long symlinks were incorrectly handled on
Be filesystems. A local attacker could exploit this with a malformed
Be filesystem and crash the system, leading to a denial of service.
(CVE-2011-2928)

Qianfeng Zhang discovered that the bridge networking interface
incorrectly handled certain network packets. A remote attacker could
exploit this to crash the system, leading to a denial of service.
(CVE-2011-2942)

Dan Kaminsky discovered that the kernel incorrectly handled random
sequence number generation. An attacker could use this flaw to
possibly predict sequence numbers and inject packets. (CVE-2011-3188)

Darren Lavender discovered that the CIFS client incorrectly handled
certain large values. A remote attacker with a malicious server could
exploit this to crash the system or possibly execute arbitrary code as
the root user. (CVE-2011-3191)

Yasuaki Ishimatsu discovered a flaw in the kernel's clock
implementation. A local unprivileged attacker could exploit this
causing a denial of service. (CVE-2011-3209)

Yogesh Sharma discovered that CIFS did not correctly handle UNCs that
had no prefixpaths. A local attacker with access to a CIFS partition
could exploit this to crash the system, leading to a denial of
service. (CVE-2011-3363)

A flaw was discovered in the Linux kernel's AppArmor security
interface when invalid information was written to it. An unprivileged
local user could use this to cause a denial of service on the system.
(CVE-2011-3619)

A flaw was found in the Linux kernel's /proc/*/*map* interface. A
local, unprivileged user could exploit this flaw to cause a denial of
service. (CVE-2011-3637)

Scot Doyle discovered that the bridge networking interface incorrectly
handled certain network packets. A remote attacker could exploit this
to crash the system, leading to a denial of service. (CVE-2011-4087)

A bug was found in the way headroom check was performed in
udp6_ufo_fragment() function. A remote attacker could use this flaw to
crash the system. (CVE-2011-4326)

Ben Hutchings discovered several flaws in the Linux Rose (X.25 PLP)
layer. A local user or a remote user on an X.25 network could exploit
these flaws to execute arbitrary code as root. (CVE-2011-4914).

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 8.7
(CVSS2#E:ND/RL:OF/RC:C)
Public Exploit Available : false