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Résumé SecurityFocus Newsletter #160

Marc SCHAEFER
Thu, 05 Sep 2002 00:34:15 -0700

Blazix Special Character Handling Server Side Script Information Disclosure 
Vulnerability
BugTraq ID: 5566
Remote: Yes
Date Published: Aug 24 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5566
Summary:

Blazix is a freely available, open source web server written in Java.  It
is available for Linux and Microsoft Windows operating systems.

A problem with Blazix may make it possible for a remote user to gain
access to sensitive information.

Blazix does not properly handle some special characters when appended to
requests.  By passing a special character with a request to the web
server, it is possible for a user to gain access to the source of
server-side scripts.  This could result in information disclosure, and
could potentially be used to gain intelligence in launching an attack
against a system.

When a user passes a request to the web server that ends in either a plus
(+) or backslash (\), the web server may react unpredictably.  This type
of character appended to the name of a .jsp file has been reported to
reveal the contents of the .jsp file.

Blazix Password Protected Directory Information Disclosure Vulnerability
BugTraq ID: 5567
Remote: Yes
Date Published: Aug 25 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5567
Summary:

Blazix is a freely available, open source web server written in Java.  It
is available for Linux and Microsoft Windows operating systems.

A problem with Blazix may make it possible for a remote user to gain
access to sensitive information.

Blazix does not properly handle some special characters when appended to
requests.  By passing a special character with a request to the web
server, it is possible for a user to gain access to a listing of a
password protected directory.  This could result in information
disclosure, and could potentially be used to gain intelligence in
launching an attack against a system.

When a user passes a request to the web server that ends in either a plus
(+) or backslash (\), the web server may react unpredictably.  This type
of character appended to the name of a password-protected directory has
been reported to reveal the contents of the directory.

Belkin F5D6130 Wireless Network Access Point SNMP Request Denial Of Service 
Vulnerability
BugTraq ID: 5571
Remote: Yes
Date Published: Aug 26 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5571
Summary:

A denial of service vulnerability has been reported in the Belkin F5D6130
Wireless Network Access Point.

Reportedly, this issue may be exploited by making a sequence of SNMP
requests. A valid community name is not required. The device will respond
to each request by broadcasting at least one SNMP trap.

If a number of SNMP requests are made, the device will fail to respond to
further requests. Additionally, all wireless connections will be dropped,
and new connections refused, denying service to legitimate users of the
wireless service.

Under some conditions, the device may also fail to respond on the ethernet
interface, eliminating all means of managing the device. In this case, a
manual restart will be required in order to regain normal functionality.

[ hardware ]

Gaim Manual Browser Command Arbitrary Command Execution Vulnerability
BugTraq ID: 5574
Remote: Yes
Date Published: Aug 27 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5574
Summary:

Gaim is an instant messaging client that supports numerous protocols. It
is available for Unix and Linux variant operating systems.

Gaim allows the user to define a 'Manual' browser option. When URL links
are recieved in instant messages, the user is able to click on the link in
order to pass the URL to a specified application.

The URL recieved is not properly sanitized. A malicious instant message
may include a URL with shell metacharacters, such as ';' or '|'. When
passed to the shell command intended to invoke the browser, this
characters will allow additional commands appended to the URL to be
executed.

Commands supplied will execute with the privileges of the user running
Gaim. It is likely that exploitation of this vulnerability could result in
the attacker gaining local access to the vulnerable system.

GDAM123 Filename Buffer Overflow Vulnerability
BugTraq ID: 5578
Remote: No
Date Published: Aug 24 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5578
Summary:

GDAM123 is a command-line MP3 player supplied with GDAM real-time digital
DJ mixing software package.  GDAM is available for Unix and Linux
variants.

The GDAM123 player is prone to a buffer overflow condition when handling
overly long filenames.  Filenames are supplied via the command line and
used in a strcpy() operation.  It is possible to trigger the overflow by
supplying a filename that is over 1024 bytes in length, which will result
in corruption of stack variables.  If stack variables (such as the return
address) can be corrupted with attacker-supplied values, it is possible to
execute arbitrary code.

Under some circumstances, the player may be installed setuid root to allow
unprivileged users to run the player if access to certain devices is
required.  In a situation such as this, the buffer overflow may be
exploited to gain elevated privileges via the execution of arbitrary code.

Python os.py Predictable Temporary Filename Command Execution Vulnerability
BugTraq ID: 5581
Remote: No
Date Published: Aug 28 2002 12:00AM
Relevant URL:
http://www.securityfocus.com/bid/5581
Summary:

Python is an open source, object oriented programming language.

It has been reported that some versions of Python create temporary files
in an insecure manner. The vulnerability occurs in the os._execvpe
function found in os.py.

It has been reported that exploitation of this vulnerability could lead to
the execution of arbitrary code.

The nature of this vulnerability is currently unspecified and further
details are not available at this time.

Reportedly, Python 2.3 is not vulnerable to this issue.



+ les usuels problèmes avec les scripts PHP.

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  • Résumé SecurityFocus Newsletter #160 Marc SCHAEFER