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| LinuxSecurity.com Linux Advisory Watch |
| February 6th, 2004 Volume 5, Number 6a |
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Editors: Dave Wreski Benjamin Thomas
dave@xxxxxxxxxxxxxxxxx ben@xxxxxxxxxxxxxxxxx
Linux Advisory Watch is a comprehensive newsletter that outlines the
security vulnerabilities that have been announced throughout the week.
It includes pointers to updated packages and descriptions of each
vulnerability.
This week, advisories were released for perl, crawl, kernel, cvs, tcpdump,
ethereal, mksnap_ffs, gaim, NetPBM, and mc. The distributors include
Debian, Fedora, FreeBSD, Mandrake, and Red Hat.
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We all love the Web, but there are parts of it that annoy all of us.
Pop-ups! Pop-ups! Endless banners! Did I mention pop-ups? At this
point, most of us have found ways to manage it. However, we are always
looking for something more effective.
On Monday, a new version of Privoxy (http://www.privoxy.org) was released.
Privoxy is an open source project that begins with a software package
called Internet Juckbuster and quickly forked into its own project with
the first stable release version 3.0 in August 2002. Privoxy is a
Web-based proxy engine with filtering capabilities that help protect an
individual's privacy. The Privoxy engine can performs tasks such as
modifying Web content, cookie management, and removing banner & pop-up
ads.
The most recent release of Privoxy is 3.0.3. After installation, it can
be configured quickly and easily. Most questions can be cleared up by
referencing section 4 (Quickstart), and section 2 (Installation) of the
Privoxy User Manual.
Unlike many small GPL projects, the Privoxy team is well organized. For
those wishing to modify or make improvements to the software, a
developer's manual is available. This manual includes information on how
to establish a connection to the CVS repository, comment requirements,
naming conventions, testing guidelines, and many other areas of useful
information. This document could prove to be very useful.
Privoxy is available for a number of different Linux distributions and
operating systems. Those using Red Hat, Conectiva, Debian, SuSE, and
Gentoo will have no trouble installing it. Binary packages are also
available for Mac OS X, Windows, OS/2, and several flavors of BSD.
More information about Privoxy and the latest releases can be found at the
following URL: http://www.privoxy.org
Until next time, cheers!
Benjamin D. Thomas
ben@xxxxxxxxxxxxxxxxx
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Introduction to Netwox and Interview with Creator Laurent Constantin
In this article Duane Dunston gives a brief introduction to Netwox, a
combination of over 130 network auditing tools. Also, Duane interviews
Laurent Constantin, the creator of Netwox.
http://www.linuxsecurity.com/feature_stories/feature_story-158.html
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Managing Linux Security Effectively in 2004
This article examines the process of proper Linux security management in
2004. First, a system should be hardened and patched. Next, a security
routine should be established to ensure that all new vulnerabilities are
addressed. Linux security should be treated as an evolving process.
http://www.linuxsecurity.com/feature_stories/feature_story-157.html
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| Distribution: Debian | ----------------------------//
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2/2/2004 - perl
Information leak
An attacker could abuse suidperl to discover information about
files that should not be accessible to unprivileged users.
http://www.linuxsecurity.com/advisories/debian_advisory-3986.html
2/3/2004 - crawl
Buffer overflow vulnerability
The program applies an unchecked-length environment variable into
a fixed size buffer.
http://www.linuxsecurity.com/advisories/debian_advisory-3994.html
2/4/2004 - kernel
Privilage escalation MIPS patch
Integer overflow in the do_brk() function of the Linux kernel
allows local users to gain root privileges.
http://www.linuxsecurity.com/advisories/debian_advisory-3996.html
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| Distribution: Fedora | ----------------------------//
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2/2/2004 - cvs
Multiple vulnerabilities
Vulnerabilities allow cvs to write to root filesystem and retain
root privileges.
http://www.linuxsecurity.com/advisories/fedora_advisory-3987.html
2/3/2004 - tcpdump
Malformed packet vulnerability
If the victim uses tcpdump, attack could result in a denial of
service, or possibly execute arbitrary code as the 'pcap' user.
http://www.linuxsecurity.com/advisories/fedora_advisory-3992.html
2/3/2004 - etherial
Denial of service vulnerability
Multiple security vulnerabilities may allow attackers to make
Ethereal crash using intentionally malformed packets.
http://www.linuxsecurity.com/advisories/fedora_advisory-3993.html
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| Distribution: FreeBSD | ----------------------------//
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1/30/2004 - mksnap_ffs
Improper option clearing
Possible consequences an include disabling extended access control
lists or enabling the use of setuid executables stored on an
untrusted filesystem.
http://www.linuxsecurity.com/advisories/freebsd_advisory-3985.html
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| Distribution: Mandrake | ----------------------------//
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2/2/2004 - gaim
Multiple vulernabilities
Multiple buffer overflows exist in gaim 0.75 and earlier.
http://www.linuxsecurity.com/advisories/mandrake_advisory-3988.html
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| Distribution: Red Hat | ----------------------------//
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2/3/2004 - NetPBM
Temporary file vulnerabilities
A number of temporary file bugs have been found in versions of
NetPBM.
http://www.linuxsecurity.com/advisories/redhat_advisory-3989.html
2/3/2004 - mc
Buffer overflow vulnerability
A buffer overflow allows remote attackers to execute arbitrary
code during symlink conversion.
http://www.linuxsecurity.com/advisories/redhat_advisory-3990.html
2/3/2004 - util-linux Login data leakage
Buffer overflow vulnerability
In some situations, the login program could use a pointer that had
been freed and reallocated.
http://www.linuxsecurity.com/advisories/redhat_advisory-3991.html
2/3/2004 - kernel
Multiple vulnerabilities
Updated kernel packages are now available that fix a few security
issues.
http://www.linuxsecurity.com/advisories/redhat_advisory-3995.html
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