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Trustix Secure Linux Security Advisory 2005.70

Trustix Secure Linux Security Advisory 2005.70
Posted Dec 14, 2005
Authored by Trustix | Site http.trustix.org

Trustix Secure Linux Security Advisory #2005-0070 - Multiple kernel vulnerabilities and a perl vulnerability have been addressed in this advisory.

tags | advisory, kernel, perl, vulnerability
systems | linux
advisories | CVE-2005-3807, CVE-2005-3784, CVE-2005-3857, CVE-2005-3962
SHA-256 | 9fb8586d1071b91a0ddf0e2fd5bab8c2f75ccfb7324332719c2e70603832cd40

Trustix Secure Linux Security Advisory 2005.70

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- --------------------------------------------------------------------------
Trustix Secure Linux Security Advisory #2005-0070

Package names: kernel, perl
Summary: Multiple vulnerabilities
Date: 2005-12-09
Affected versions: Trustix Secure Linux 2.2
Trustix Secure Linux 3.0
Trustix Operating System - Enterprise Server 2

- --------------------------------------------------------------------------
Package description:
kernel
The kernel package contains the Linux kernel (vmlinuz), the core of your
Trustix Secure Linux operating system. The kernel handles the basic
functions of the operating system: memory allocation, process
allocation, device input and output, etc.

perl
Perl is a high-level programming language with roots in C, sed, awk and
shell scripting. Perl is good at handling processes and files, and is
especially good at handling text. Perl's hallmarks are practicality and
efficiency. While it is used to do a lot of different things, Perl's
most common applications (and what it excels at) are probably system
administration utilities and web programming. A large proportion of the
CGI scripts on the web are written in Perl. You need the perl package
installed on your system so that your system can handle Perl scripts.

Problem description:
kernel < TSL 3.0 >
- New Upstream.
- SECURITY Fix: Memory leak in the VFS file lease handling in locks.c
allows local users to cause a denial of service via certain Samba
activities that cause an fasync entry to be re-allocated by the
fcntl_setlease function after the fasync queue has already been
cleaned by the locks_delete_lock function.
- The auto-reap of child processes in Linux kernel 2.6 includes
processes with ptrace attached, which leads to a dangling ptrace
reference and allows local users to cause a denial of service (crash).
- The time_out_leases function in locks.c allows local users to cause a
denial of service (kernel log message consumption) by causing a large
number of broken leases, which is recorded to the log using the printk
function.

The Common Vulnerabilities and Exposures project (cve.mitre.org) has
assigned the names CVE-2005-3807, CVE-2005-3784 and CVE-2005-3857 to
these issues.

perl < TSL 3.0 > < TSL 2.2 > < TSEL 2 >
- SECURITY Fix: Integer overflow in the format string functionality
(Perl_sv_vcatpvfn) allows attackers to overwrite arbitrary memory and
possibly execute arbitrary code via format string specifiers with
large values.

The Common Vulnerabilities and Exposures project has assigned the
name CVE-2005-3962 to this issue.

Action:
We recommend that all systems with this package installed be upgraded.
Please note that if you do not need the functionality provided by this
package, you may want to remove it from your system.


Location:
All Trustix Secure Linux updates are available from
<URI:http://http.trustix.org/pub/trustix/updates/>
<URI:ftp://ftp.trustix.org/pub/trustix/updates/>


About Trustix Secure Linux:
Trustix Secure Linux is a small Linux distribution for servers. With focus
on security and stability, the system is painlessly kept safe and up to
date from day one using swup, the automated software updater.


Automatic updates:
Users of the SWUP tool can enjoy having updates automatically
installed using 'swup --upgrade'.


Questions?
Check out our mailing lists:
<URI:http://www.trustix.org/support/>


Verification:
This advisory along with all Trustix packages are signed with the
TSL sign key.
This key is available from:
<URI:http://www.trustix.org/TSL-SIGN-KEY>

The advisory itself is available from the errata pages at
<URI:http://www.trustix.org/errata/trustix-2.2/> and
<URI:http://www.trustix.org/errata/trustix-3.0/>
or directly at
<URI:http://www.trustix.org/errata/2005/0070/>


MD5sums of the packages:
- --------------------------------------------------------------------------
0a2350d4e0d9965f62cdf5888bcb0f59 2.2/rpms/perl-5.8.5-9tr.i586.rpm

f9fcbc28250c9e5814e42efcc9f43d8a 3.0/rpms/kernel-2.6.14.3-1tr.i586.rpm
358f51e0ff323ff75181c6c4e2bc6344 3.0/rpms/kernel-doc-2.6.14.3-1tr.i586.rpm
d947bd6c4c87baebb8c0de07e318eb5c 3.0/rpms/kernel-headers-2.6.14.3-1tr.i586.rpm
c310a3663bb59f7e239646ec666ca7e8 3.0/rpms/kernel-smp-2.6.14.3-1tr.i586.rpm
bb7bcc9f91b3d7ca8e4788130db0b6d4 3.0/rpms/kernel-smp-headers-2.6.14.3-1tr.i586.rpm
3ee05562361906884b990a716c16ed3f 3.0/rpms/kernel-source-2.6.14.3-1tr.i586.rpm
6701845da1900ff436de6430b30a20d5 3.0/rpms/kernel-utils-2.6.14.3-1tr.i586.rpm
cace6154ca9297d263abd04f1ac25358 3.0/rpms/perl-5.8.7-2tr.i586.rpm
- --------------------------------------------------------------------------


Trustix Security Team


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