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From: Network Computing and The SANS Institute (sanssans.org)
Date: Thu May 03 2001 - 14:08:07 CDT

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    Re: Your personalized newsletter

                      -- Security Alert Consensus --
                            Number 095 (01.18)
                          Thursday, May 3, 2001
                            Created for you by
                Network Computing and the SANS Institute
                           Powered by Neohapsis

    ----------------------------------------------------------------------

    Welcome to the latest edition of Security Alert Consensus! Below you
    should find information pertaining only to the categories you requested.
    If you have any problems or questions, please e-mail us at
    <consensusnwc.com>.

    ----------------------------------------------------------------------

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    ----------------------------------------------------------------------

    Windows/IIS administrators should take note of what appears to be a
    brutal buffer overflow in IIS v5 .printer ISAPI extensions {01.18.001}.
    The overflow was reported on May 2nd, and we've already seen exploit
    code circulating. The extension is enabled by default, so there is a
    good chance that this vulnerability will effect a large number of
    organizations.

    While administrators are encouraged first and foremost to patch, those
    running intrusion detection systems might consider getting updated
    detection signatures from their vendors this week. We also noticed that
    http://www.whitehats.com/ had signatures posted for the Enterasys Dragon
    and the open-source SNORT IDS products within 48 hours of the initial
    vulnerability announcement.

    Until next week,
    - Security Alert Consensus Team

    ************************************************************************

    -----BEGIN PGP SIGNED MESSAGE-----
    Hash: SHA1

    TABLE OF CONTENTS:

    {01.18.001} Win - MS01-023: Buffer overflow in IIS .printer extension
                handler
    {01.18.006} Win - Update {01.16.008}: MS01-021: Invalid Web request
                crashes ISA Web proxy service
    {01.18.010} Win - Winamp AIP file parsing buffer overflow
    {01.18.012} Win - IIS NTLM authentication DoS
    {01.18.018} Win - RaidenFTP server reverse directory traversal
                vulnerability
    {01.18.020} Win - Netcruiser Web server DOS device name vulnerability
    {01.18.021} Win - Small HTTP server DOS device causes system to crash
    {01.18.022} Win - IPSwitch IMail mailing list To: header buffer overflow
    {01.18.026} Win - WebXQ Web server reverse directory traversal
                vulnerability
    {01.18.028} Win - ICQ WebFront plugin multiple % in URL causes DoS
    {01.18.030} Win - BRS WebWeaver Web/ftp server reverse directory
                traversal
    {01.18.032} Win - Alex ftp server reverse directory traversal
    {01.18.033} Win - BearShare arbitrary file retrieval
    {01.18.004} Linux - Update {01.17.009}: Nirvana editor (nedit) insecure
                temp file handling
    {01.18.005} Linux - Progeny FTP server updates
    {01.18.007} Linux - Update {01.15.001}: ntpd/xntpd control request
                parsing buffer overflow
    {01.18.011} Linux - Update {01.16.030}: Hylafax hfaxd -q parameter
                format string vulnerability
    {01.18.013} Linux - Update {01.09.026}: Multiple Zope vulnerabilities
    {01.18.029} Linux - rpmdrake temp file handling vulnerability
    {01.18.036} Linux - Immunix updated GnuPG
    {01.18.024} Sol - Update {01.08.006}: USER_LDT allows call gates to
                execute protected kernel code
    {01.18.002} AIX - RST packet crashes snmpd
    {01.18.003} AIX - Multiple imap buffer overflows
    {01.18.015} NW - Update {01.14.020}: BorderManager VPN connection flood
                DoS
    {01.18.008} HPUX - pcltotiff denial of service
    {01.18.009} Other - Tektronix/Xerox PhaserLink admin Web server
                vulnerabilities
    {01.18.031} Other - IRIX netprint -n symbols vulnerability
    {01.18.014} Cross - gftp format string vulnerability
    {01.18.016} Cross - Bugzilla remote command execution
    {01.18.017} Cross - kdesu creates world-readable temp file to hold
                authentication info
    {01.18.019} Cross - Perl Web server reverse directory traversal
                vulnerability
    {01.18.023} Cross - Update {01.15.011}: Multivendor FTP glob
                functionality buffer overflow
    {01.18.025} Cross - iScouter PHP Web portal config file disclosure
    {01.18.027} Cross - PerlCal cal_make.pl reverse directory traversal
                vulnerability
    {01.18.034} Cross - OpenSSL 0.9.6a released
    {01.18.035} Svc - PayPal incorrect login DoS

    - --- Windows News -------------------------------------------------------

    *** {01.18.001} Win - MS01-023: Buffer overflow in IIS .printer
                    extension handler

    Microsoft has released MS01-023 ("Buffer overflow in IIS .printer
    extension handler"). There is a buffer overflow in the handling of the
    Host header used by the printer ISAPI extension shipped with all
    installations of IIS 5.0 (on Windows 2000). The buffer overflow allows
    a remote attacker to execute arbitrary code under local system
    privileges.

    An exploit has been published.

    FAQ and patch:
    http://www.microsoft.com/technet/security/bulletin/MS01-023.asp

    Source: Microsoft
    http://archives.neohapsis.com/archives/vendor/2001-q2/0023.html

    *** {01.18.006} Win - Update {01.16.008}: MS01-021: Invalid Web request
                    crashes ISA Web proxy service

    We just wanted to pass along a brief note regarding the vulnerability
    discussed in {01.16.008} ("MS01-021: Invalid Web request crashes ISA
    Web proxy service"). There has been some public discussion indicating
    that arbitrary code execution may be possible due to this buffer
    overflow. This fact has not been confirmed, but a notable security
    researcher posted it. A few of the pertinent posts are indicated below,
    in case you wish to look into the matter further.

    Source: Win2KSecurityAdvice
    http://archives.neohapsis.com/archives/win2ksecadvice/2001-q2/0036.html
    http://archives.neohapsis.com/archives/win2ksecadvice/2001-q2/0038.html

    *** {01.18.010} Win - Winamp AIP file parsing buffer overflow

    Winamp versions 2.60 through 2.73 (and possibly others) have been
    indicated to have a buffer overflow in the parsing of AIP files. The
    vulnerability is escalated because Winamp will automatically download
    and parse AIP files by default. The vulnerability allows local execution
    of arbitrary code.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0518.html

    *** {01.18.012} Win - IIS NTLM authentication DoS

    We wanted to indicate a potential denial of service found in IIS server
    (versions 4 and 5). If your Web server is part of a domain that has
    lockout enabled and you allow NTLM authentication (which is allowed for
    every directory by default), then it's possible for an attacker to cause
    the IIS IUSR and IWAM accounts to become locked out, rendering the Web
    server unusable. Even worse, it's possible for the attacker to lock out
    other system accounts (such as SQL server and backup agent accounts),
    as well.

    To properly avoid this denial of service, you must either:
    - -- Not use account lockout for service accounts (creation of a separate
    resource domain will help) or
    - -- Not allow NTLM authentication on any of Web files or directories.

    Source: NTBugtraq
    http://archives.neohapsis.com/archives/ntbugtraq/2001-q2/0010.html

    *** {01.18.018} Win - RaidenFTP server reverse directory traversal
                    vulnerability

    RaidenFTP server prior to build 952 has been found to allow a remote
    attacker to access arbitrary files outside the ftp root by using reverse
    directory traversal ('..') notation in particular ftp commands. The
    attacker must have a valid ftp account to exploit this vulnerability.

    The vendor has confirmed this vulnerability and released build 952 to
    fix the problem. It can be downloaded at:
    http://playstation2.idv.tw/raidenftpd/download.html

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0465.html

    *** {01.18.020} Win - Netcruiser Web server DOS device name
                    vulnerability

    A report has surfaced that indicates the Netcruiser Web server version
    0.1.2.8 (and possibly prior) contains a vulnerability in the handling
    of DOS device names in URL requests.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0427.html

    *** {01.18.021} Win - Small HTTP server DOS device causes system to
                    crash

    A report has been released indicating that the Small HTTP server version
    2.03 has been found to crash when given a URL request that contains DOS
    device names.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0428.html

    *** {01.18.022} Win - IPSwitch IMail mailing list To: header buffer
                    overflow

    IPSwitch's IMail version 6.06 SMTP server has been found to contain a
    buffer overflow in the handling of the To: header used when processing
    incoming mailing list traffic. This vulnerability allows a remote
    attacker to execute arbitrary code under local system privileges.

    The vendor has confirmed this vulnerability and released a patch, which
    is available at:
    http://ipswitch.com/support/IMail/patch-upgrades.html

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0433.html

    *** {01.18.026} Win - WebXQ Web server reverse directory traversal
                    vulnerability

    The WebXQ Web server version 2.1.204 has been found to allow a remote
    attacker to embed reverse directory traversal ('..') notation in a URL
    request.

    The vendor has confirmed this vulnerability and released a patch, which
    is available at:
    http://www.datawizard.net/Free_Software/WebXQ_Free/Webxq_free.htm

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0490.html

    *** {01.18.028} Win - ICQ WebFront plugin multiple % in URL causes DoS

    The ICQ WebFront plugin has been reported to contain a denial of service
    when the included Web server receives multiple '%' characters in a
    request that could result in the application becoming unresponsive.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0511.html

    *** {01.18.030} Win - BRS WebWeaver Web/ftp server reverse directory
                    traversal

    BRS WebWeaver Web and ftp server version 0.63 has been found vulnerable
    to a reverse directory traversal attack in the included Web server. This
    vulnerability would allow a remote attacker to access files outside the
    Web root. A glob/filename vulnerability in the ftp server handling also
    would allow a remote attacker to access files outside the ftp root.

    These vulnerabilities have not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0519.html

    *** {01.18.032} Win - Alex ftp server reverse directory traversal

    Alex ftp server version 0.7 (from www.alex.feedback.net) contains a
    reverse directory traversal bug that would allow a remote attacker to
    access arbitrary files contained outside the ftp root.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0523.html

    *** {01.18.033} Win - BearShare arbitrary file retrieval

    BearShare versions 2.2.2 and prior have been found to allow remote
    attackers to retrieve arbitrary files from the system via the included
    Web server.

    The report indicates confirmation by the vendor, which has released an
    updated version. Vendor homepage:
    http://www.bearshare.com/

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0525.html

    - --- Linux News ---------------------------------------------------------

    *** {01.18.004} Linux - Update {01.17.009}: Nirvana editor (nedit)
                    insecure temp file handling

    Debian, Progeny and Mandrake have released updated nedit packages that
    fix the vulnerability discussed in {01.17.009} ("Nirvana editor (nedit)
    insecure temp file handling").

    Updated Debian DEBs:
    http://archives.neohapsis.com/archives/vendor/2001-q2/0022.html

    Updated Progeny DEBs:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0501.html

    Updated Mandrake RPMs:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0472.html

    Source: Debian, Progeny, Mandrake (SF Bugtraq)
    http://archives.neohapsis.com/archives/vendor/2001-q2/0022.html
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0501.html
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0472.html

    *** {01.18.005} Linux - Progeny FTP server updates

    Progeny has released an advisory reviewing any recent security updates
    in the eight (!) different FTP servers it make available in its
    distribution. Users of ftpd prior to 0.3.2-7 or bsd-ftpd prior to 0.17-3
    should update their packages.

    Source: Progeny (SF Bugtraq)
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0494.html

    *** {01.18.007} Linux - Update {01.15.001}: ntpd/xntpd control request
                    parsing buffer overflow

    EnGarde has released updated xntpd packages that fix the vulnerability
    discussed in {01.15.001} ("ntpd/xntpd control request parsing buffer
    overflow").

    Updated RPMs are listed at:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0127.html

    Source: EnGarde (SF Bugtraq)
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0127.html

    *** {01.18.011} Linux - Update {01.16.030}: Hylafax hfaxd -q parameter
                    format string vulnerability

    Mandrake has released updated hylafax packages that fix the
    vulnerability discussed in {01.16.030} ("Hylafax hfaxd -q parameter
    format string vulnerability").

    Updated RPMs are listed at:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0435.html

    Source: Mandrake (SF Bugtraq)
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0435.html

    *** {01.18.013} Linux - Update {01.09.026}: Multiple Zope
                    vulnerabilities

    Debian has rereleased updated Zope packages that fix the vulnerability
    discussed in {01.09.026} ("Multiple Zope vulnerabilities"). The
    previously released updates were found to not correctly function.

    Updated DEBs are listed at:
    http://archives.neohapsis.com/archives/vendor/2001-q2/0021.html

    Source: Debian
    http://archives.neohapsis.com/archives/vendor/2001-q2/0021.html

    *** {01.18.029} Linux - rpmdrake temp file handling vulnerability

    Mandrake's rpmdrake application has been found vulnerable to a temporary
    file handling attack.

    Updated RPMs are listed at:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0514.html

    Source: Mandrake (SF Bugtraq)
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0514.html

    *** {01.18.036} Linux - Immunix updated GnuPG

    Immunix has released an updated GnuPG application that fixes various
    vulnerabilities previously reported.

    Updated RPMs are listed at:
    http://archives.neohapsis.com/archives/linux/immunix/2001-q2/0015.html

    Source: Immunix
    http://archives.neohapsis.com/archives/linux/immunix/2001-q2/0015.html

    - --- Solaris News -------------------------------------------------------

    *** {01.18.024} Sol - Update {01.08.006}: USER_LDT allows call gates to
                    execute protected kernel code

    Sun has released patch 108529-07 to fix the vulnerability discussed in
    {01.08.006} ("USER_LDT allows call gates to execute protected kernel
    code"). The vulnerability effects Solaris 2.6, 7 and 8 on x86 platforms
    (only).

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0463.html

    - --- AIX News -----------------------------------------------------------

    *** {01.18.002} AIX - RST packet crashes snmpd

    The SNMP server shipped with AIX 4.3 has been found to crash if a remote
    attacker sends an RST packet immediately after the three-way TCP
    handshake, but before the SNMP daemon actually has accepted -- accept()
    - -- the connection. This results in a denial of service because the SNMP
    services of that system become unavailable.

    IBM has confirmed the problem and released APAR IY17630 to fix it.

    Source: IBM
    http://archives.neohapsis.com/archives/aix/2001-q2/0005.html

    *** {01.18.003} AIX - Multiple imap buffer overflows

    IBM has released APAR IY17932 for AIX 4.3, which fixes buffer overruns
    resulting in "security issues" in imapd. We're not sure of the extent
    of exploitability, but if IBM is willing to mention that a bug has
    security implications, it must be serious.

    Source: IBM
    http://archives.neohapsis.com/archives/aix/2001-q2/0005.html

    - --- NetWare News -------------------------------------------------------

    *** {01.18.015} NW - Update {01.14.020}: BorderManager VPN connection
                    flood DoS

    Novell has released a patch for the vulnerability discussed in
    {01.14.020} ("BorderManager VPN connection flood DoS").

    A patch can be downloaded at:
    http://support.novell.com/cgi-bin/search/tidfinder.cgi?2958995

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-05/0000.html

    - --- HP-UX News ---------------------------------------------------------

    *** {01.18.008} HPUX - pcltotiff denial of service

    HP has released an advisory indicating a potential denial of service in
    the pcltotiff script shipped with HP-UX 10.x. The denial of service
    seems to be due to improper file permissions.

    HP has not yet released patches. A work around can be found at:
    http://archives.neohapsis.com/archives/hp/2001-q2/0018.html

    Source: HP
    http://archives.neohapsis.com/archives/hp/2001-q2/0018.html

    - --- Other News ---------------------------------------------------------

    *** {01.18.009} Other - Tektronix/Xerox PhaserLink admin Web server
                    vulnerabilities

    An advisory was released that indicated problems in Tektronix/Xerox
    PhaserLink 850 network printers. It's possible for a remote attacker to
    use the included Web administration interface to recover the
    administrator user name and password used to log into the printer. It's
    also possible to cause a denial of service by reconfiguring the printer.
    The advisory indicates potential for physical damage.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0482.html

    *** {01.18.031} Other - IRIX netprint -n symbols vulnerability

    A vulnerability has been found in both the netprint command and the
    import of various symbols (triggered by the -n command line option).
    This allows users in the 'LP Administrators' group to gain root access.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0475.html
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0502.html

    - --- Cross-Platform News ------------------------------------------------

    *** {01.18.014} Cross - gftp format string vulnerability

    The gftp ftp client contained a format string vulnerability that could
    allow a malicious ftp server to execute arbitrary code under the uid of
    the user running gftp.

    Updated RedHat RPMs:
    http://archives.neohapsis.com/archives/linux/redhat/2001-q2/0043.html

    Updated Immunix RPMs:
    http://archives.neohapsis.com/archives/linux/immunix/2001-q2/0014.html

    Updated Mandrake RPMs:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0509.html

    Source: RedHat, Immunix, Mandrake
    http://archives.neohapsis.com/archives/linux/redhat/2001-q2/0043.html
    http://archives.neohapsis.com/archives/linux/immunix/2001-q2/0014.html
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0509.html

    *** {01.18.016} Cross - Bugzilla remote command execution

    The bugzilla bug tracking Web CGI suite has been found to contain a
    vulnerability that allows remote attackers to execute arbitrary command
    line commands if they embed certain shell metacharacters into their
    e-mail address.

    A third-party workaround is available at:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0530.html

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0530.html

    *** {01.18.017} Cross - kdesu creates world-readable temp file to hold
                    authentication info

    RedHat has released an advisory that indicates kdesu creates a
    world-readable temporary file that contains authentication information.
    This could allow a local attacker to access the X server and execute
    arbitrary commands under the account kdesu was attempting to access.

    Updated RedHat RPMs:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0529.html

    Source: RedHat (SF Bugtraq)
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0529.html

    *** {01.18.019} Cross - Perl Web server reverse directory traversal
                    vulnerability

    A reverse directory traversal vulnerability in the Perl Web server
    version 0.3 allows a remote attacker to access arbitrary files that are
    outside the WebÕs root directory and readable by the Web server uid.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0426.html

    *** {01.18.023} Cross - Update {01.15.011}: Multivendor FTP glob
                    functionality buffer overflow

    MIT has released an updated version of its Kerberos-enabled ftp server
    to address the vulnerability discussed in {01.15.011} ("Multivendor FTP
    glob functionality buffer overflow"). The vulnerability allows a remote
    attacker to gain root privileges on the server. All releases of MIT
    Kerberos version 5 are vulnerable.

    Patches are available at:
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0460.html

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0460.html

    *** {01.18.025} Cross - iScouter PHP Web portal config file disclosure

    The iScouter PHP Web portal application stores database authentication
    and other application configuration information in a 'config.inc' file
    within the Web root. This allows a local attacker to retrieve the
    contents of the file.

    This vulnerability has not been confirmed.

    Source: Vuln-Dev
    http://archives.neohapsis.com/archives/vuln-dev/2001-q2/0286.html

    *** {01.18.027} Cross - PerlCal cal_make.pl reverse directory traversal
                    vulnerability

    The cal_make.pl CGI shipped with the PerlCal application has been found
    vulnerable to a reverse directory traversal attack. This vulnerability
    allows a remote attacker to view the contents of arbitrary files
    readable by the Web server.

    This vulnerability has not been confirmed.

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0506.html

    *** {01.18.034} Cross - OpenSSL 0.9.6a released

    OpenSSL version 0.9.6a has been released. This version contains multiple
    security fixes, and all users are recommended to upgrade.

    The updated version is available at:
    http://www.openssl.org/

    Source: SecurityFocus Bugtraq
    http://archives.neohapsis.com/archives/bugtraq/2001-04/0446.html

    - --- Services News ------------------------------------------------------

    *** {01.18.035} Svc - PayPal incorrect login DoS

    This is more of an interesting consequence than anything else, but if
    someone incorrectly attempts to log into your PayPal.com account
    (frequently used by Ebay bidders to exchange money), your account will
    be locked and a new password be sent via postal mail. Since it's
    potentially easy to deduce PayPal account names from Ebay auction
    information, this could result in a potential headache because
    disgruntled losing bidders really could cause havoc.

    Source: Vuln-Dev
    http://archives.neohapsis.com/archives/vuln-dev/2001-q2/0307.html

    ************************************************************************

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    ------------------------------------------------------------------------

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    * DEPLOY THE LATEST ENCRYPTION and authentication techniques
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    ----------------------------------------------------------------------

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