January 3, 2003

Linux Advisory Watch - January 3rd, 2002

By:  Benjamin D.
Thomas

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 bind, perl, canna, klisa, cyrus-imapd,
wget, kde, and fetchmail.  The distributors include Caldera, Debian, Gentoo,
and SuSE.

LinuxSecurity Feature Extras:

No
'A' Word In Time
- Maintaining accurate time is required for security.
Many tools and devices exist to ensure that accurate time is maintained
on an organization's system. It makes the job of analysis and system administration
much easier to deal with, as well.

If
It Ain't Broke See If It's Fixed
-
Attackers are still compromising
servers with well-known attacks. General awareness can assist the busy
administrators and users to protect their systems from these kinds of attacks.
SANS provides a list of the Top 20 most common security vulnerabilities,
how to identify each, and what can be done to protect   against
these vulnerabilities.

 

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Package: bind
Date: 12-20-2002
Description: A
vulnerability in the DNS resolver library may allow remote attackers to
execute arbitrary code with the privileges of applications that issue network
name or address requests.
Vendor Alerts: Caldera:
bind-8.3.4-1.i386.rpm
dbade93f9de80c9d05dafdb010c51f0f 

bind-doc-8.3.4-1.i386.rpm
077c5888f3c3f3074bcb12c79c9c97ec 

bind-utils-8.3.4-1.i386.rpm
dfad9dd9bea8a88ba1958e68b6b255a7 

ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2002-059.0/RPMS
 

 

Caldera Vendor Advisory:
http://www.linuxsecurity.com/advisories/caldera_advisory-2691.html

 

 

Package: perl
Date: 12-20-2002
Description: A
security hole has been discovered in Safe.pm. When a Safe compartment has
already been used, there's no guarantee that it's safe any longer, because
there's a way for code executed within the Safe compartment to alter its
operation mask. (Thus, programs that use a Safe compartment only once aren't
affected by this bug
Vendor Alerts: Gentoo:
PLEASE SEE VENDOR
ADVISORY FOR UPDATE

Gentoo Vendor Advisory:
http://www.linuxsecurity.com/advisories/gentoo_advisory-2692.html

 

Package: canna
Date: 12-20-2002
Description: hsj"
of Shadow Penguin Security discovered a heap overflow vulnerability in
the irw_through function in canna server version 3.6 and earlier."
Vendor Alerts: Gentoo:
PLEASE SEE VENDOR
ADVISORY FOR UPDATE

Gentoo Vendor Advisory:
http://www.linuxsecurity.com/advisories/gentoo_advisory-2694.html

 

Package: klisa
Date: 12-20-2002
Description: The
lisa daemon contains a buffer overflow vulnerability which potentially
enables any local user, as well any any remote attacker on the LAN who
is able to gain control of the LISa port (7741 by default), to obtain root
privileges.  In addition, a remote attacker potentially may be able
to gain access to a victim's
account by
using an "rlan://" URL in an HTML page or via another KDE application.
 
Vendor Alerts: Debian:
PLEASE SEE VENDOR
ADVISORY FOR UPDATE

Debian Vendor Advisory:
http://www.linuxsecurity.com/advisories/debian_advisory-2695.html

 

Package: cyrus-imapd
Date: 12-20-2002
Description: The
cyrus imapd contains a buffer overflow which could be exploited by remote
attackers prior to logging in. Attackers could generate oversized error
messages and overflow buffers inside imapd.    
 
Vendor Alerts: SuSE:
ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/
cyrus-imapd-2.1.9-41.i586.rpm
47785bc84eeebbddcd50a267684d6500

ftp://ftp.suse.com/pub/suse/i386/update/8.1/rpm/i586/
cyrus-sasl2-2.1.7-52.i586.rpm
b740ad1a675f2c14ffc33097a1c41ee5
    

SuSE Vendor Advisory:
http://www.linuxsecurity.com/advisories/suse_advisory-2696.html
 

Debian:

Debian Vendor
Advisory:

http://www.linuxsecurity.com/advisories/debian_advisory-2698.html

 

Package: wget
Date: 12-20-2002
Description: A
malicious server could potentially overwrite key files to cause a denial
of service or, in some cases, gain privileges by modifying executable files.
The risk is mitigated because non-default configurations are primarily
affected, and the user must be convinced to access the malicious server.
However, web-based clients may be more easily exploited.
Vendor Alerts: Gentoo:
PLEASE SEE VENDOR
ADVISORY FOR UPDATE

Gentoo Vendor Advisory:
http://www.linuxsecurity.com/advisories/gentoo_advisory-2693.html

 

Package: kde
Date: 12-22-2002
Description: In
some instances KDE fails to properly quote parameters of instructions passed
to a command shell for execution.
Vendor Alerts: Gentoo:
PLEASE SEE VENDOR
ADVISORY FOR UPDATE

Gentoo Vendor Advisory:
http://www.linuxsecurity.com/advisories/gentoo_advisory-2697.html

 

 

Package: fetchmail
Date: 12-22-2002
Description: When
fetchmail retrieves a mail all headers that contain addresses are searched
for local addresses.  If a hostname is missing, fetchmail appends
it but doesn't reserve enough space for it.  This heap overflow can
be used by remote attackers to crash it or to execute arbitrary code with
the privileges of the user running fetchmail.
Vendor Alerts: Debian:
http://security.debian.org/pool/updates/main/f/
fetchmail/fetchmail_5.3.3-4.3_i386.deb
Size/MD5 checksum:   342328 51380d2821f2837a7aaf3f14850fce83

Debian Vendor Advisory:
http://www.linuxsecurity.com/advisories/debian_advisory-2699.html

 

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