| Description: | Description:
The remote host is missing an update to linux-ec2
announced via advisory USN-1089-1.
Details follow:
Dan Rosenberg discovered that multiple terminal ioctls did not correctly
initialize structure memory. A local attacker could exploit this to read
portions of kernel stack memory, leading to a loss of privacy.
(CVE-2010-4076, CVE-2010-4077)
Dan Rosenberg discovered that the socket filters did not correctly
initialize structure memory. A local attacker could create malicious
filters to read portions of kernel stack memory, leading to a loss of
privacy. (CVE-2010-4158)
Dan Rosenberg discovered that certain iovec operations did not calculate
page counts correctly. A local attacker could exploit this to crash the
system, leading to a denial of service. (CVE-2010-4162)
Dan Rosenberg discovered that the SCSI subsystem did not correctly validate
iov segments. A local attacker with access to a SCSI device could send
specially crafted requests to crash the system, leading to a denial of
service. (CVE-2010-4163)
Dan Rosenberg discovered that the RDS protocol did not correctly check
ioctl arguments. A local attacker could exploit this to crash the system,
leading to a denial of service. (CVE-2010-4175)
Alan Cox discovered that the HCI UART driver did not correctly check if
a write operation was available. If the mmap_min-addr sysctl was changed
from the Ubuntu default to a value of 0, a local attacker could exploit
this flaw to gain root privileges. (CVE-2010-4242)
Solution:
The problem can be corrected by upgrading your system to the
following package versions:
Ubuntu 9.10:
linux-image-2.6.31-23-386 2.6.31-23.74
linux-image-2.6.31-23-generic 2.6.31-23.74
linux-image-2.6.31-23-generic-pae 2.6.31-23.74
linux-image-2.6.31-23-ia64 2.6.31-23.74
linux-image-2.6.31-23-lpia 2.6.31-23.74
linux-image-2.6.31-23-powerpc 2.6.31-23.74
linux-image-2.6.31-23-powerpc-smp 2.6.31-23.74
linux-image-2.6.31-23-powerpc64-smp 2.6.31-23.74
linux-image-2.6.31-23-server 2.6.31-23.74
linux-image-2.6.31-23-sparc64 2.6.31-23.74
linux-image-2.6.31-23-sparc64-smp 2.6.31-23.74
linux-image-2.6.31-23-virtual 2.6.31-23.74
linux-image-2.6.31-308-ec2 2.6.31-308.28
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.
http://www.securityspace.com/smysecure/catid.html?in=USN-1089-1
Risk factor : Medium
CVSS Score:
4.9
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