Oracle Linux 3 : kernel (ELSA-2008-0211)

This script is Copyright (C) 2013 Tenable Network Security, Inc.


Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2008:0211 :

Updated kernel packages that fix various security issues and several
bugs are now available for Red Hat Enterprise Linux 3.

This update has been rated as having important security impact by the
Red Hat Security Response Team.

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

These updated packages fix the following security issues :

* the absence of a protection mechanism when attempting to access a
critical section of code has been found in the Linux kernel open file
descriptors control mechanism, fcntl. This could allow a local
unprivileged user to simultaneously execute code, which would
otherwise be protected against parallel execution. As well, a race
condition when handling locks in the Linux kernel fcntl functionality,
may have allowed a process belonging to a local unprivileged user to
gain re-ordered access to the descriptor table. (CVE-2008-1669,
Important)

* the absence of a protection mechanism when attempting to access a
critical section of code, as well as a race condition, have been found
in the Linux kernel file system event notifier, dnotify. This could
allow a local unprivileged user to get inconsistent data, or to send
arbitrary signals to arbitrary system processes. (CVE-2008-1375,
Important)

Red Hat would like to thank Nick Piggin for responsibly disclosing the
following issue :

* when accessing kernel memory locations, certain Linux kernel drivers
registering a fault handler did not perform required range checks. A
local unprivileged user could use this flaw to gain read or write
access to arbitrary kernel memory, or possibly cause a kernel crash.
(CVE-2008-0007, Important)

* a flaw was found when performing asynchronous input or output
operations on a FIFO special file. A local unprivileged user could use
this flaw to cause a kernel panic. (CVE-2007-5001, Important)

* a flaw was found in the way core dump files were created. If a local
user could get a root-owned process to dump a core file into a
directory, which the user has write access to, they could gain read
access to that core file. This could potentially grant unauthorized
access to sensitive information. (CVE-2007-6206, Moderate)

* a buffer overflow was found in the Linux kernel ISDN subsystem. A
local unprivileged user could use this flaw to cause a denial of
service. (CVE-2007-6151, Moderate)

* a race condition found in the mincore system core could allow a
local user to cause a denial of service (system hang). (CVE-2006-4814,
Moderate)

* it was discovered that the Linux kernel handled string operations in
the opposite way to the GNU Compiler Collection (GCC). This could
allow a local unprivileged user to cause memory corruption.
(CVE-2008-1367, Low)

As well, these updated packages fix the following bugs :

* a bug, which caused long delays when unmounting mounts containing a
large number of unused dentries, has been resolved.

* in the previous kernel packages, the kernel was unable to handle
certain floating point instructions on Itanium(R) architectures.

* on certain Intel CPUs, the Translation Lookaside Buffer (TLB) was
not flushed correctly, which caused machine check errors.

Red Hat Enterprise Linux 3 users are advised to upgrade to these
updated packages, which contain backported patches to resolve these
issues.

See also :

https://oss.oracle.com/pipermail/el-errata/2008-May/000587.html

Solution :

Update the affected kernel packages.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 6.2
(CVSS2#E:F/RL:OF/RC:C)
Public Exploit Available : true

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 67678 ()

Bugtraq ID: 26701

CVE ID: CVE-2006-4814
CVE-2007-5001
CVE-2007-6151
CVE-2007-6206
CVE-2008-0007
CVE-2008-1367
CVE-2008-1375
CVE-2008-1669