Date: Wed, 13 Jul 2005 12:45:40 +0200
From: Marcus Meissner <meissner@suse.de>
To: suse-security-announce@suse.com
Subject: [suse-security-announce] SUSE Security Summary Report SUSE-SR:2005:017


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______________________________________________________________________________

                        SUSE Security Summary Report

        Announcement ID:        SUSE-SR:2005:017
        Date:                   Wed, 13 Jul 2005 11:00:00 +0000
        Cross-References:       CAN-2005-1278
                                CAN-2005-1279
                                CAN-2005-1280
                                CAN-2005-1127
                                CAN-2005-1934
                                CAN-2005-1262
                                CAN-2005-1269
                                CAN-2005-0967
                                CAN-2005-0966
                                CAN-2005-0965
                                CAN-2005-0208
                                CAN-2005-0472
                                CAN-2005-1848
                                CAN-2005-2096
                                CAN-2005-2149
                                CAN-2005-2148
                                CAN-2005-1174
                                MITKRB5-SA-2005-002
                                CAN-2005-1689
                                MITKRB5-SA-2005-003

    Content of this advisory:
        1) Solved Security Vulnerabilities:
            - tcpdump remote denial of service attack
            - perl-Net-Server remote denial of service attack
            - gaim remote denial of service attack
            - pam_krb5 denial of service attack
            - dhcpcd remote denial of service attack
            - perl-Compress-Zlib potential denial of service attack
            - cacti remote code execution
            - krb5 remote denial of service attack

        2) Pending Vulnerabilities, Solutions, and Work-Arounds:
            - Acrobat Reader buffer overflow
            - various new Mozilla and Mozilla Firefox vulnerabilities

        3) Authenticity Verification and Additional Information

______________________________________________________________________________

1) Solved Security Vulnerabilities

   To avoid flooding mailing lists with SUSE Security Announcements for minor
   issues, SUSE Security releases weekly summary reports for the low profile
   vulnerability fixes. The SUSE Security Summary Reports do not list md5 sums
   or download URLs like the SUSE Security Announcements that are released for
   more severe vulnerabilities.

   Fixed packages for the following incidents are already available on our FTP
   server and via the YaST Online Update.

   - tcpdump remote denial of service attack

     Various bugs were fixed in tcpdump that would cause tcpdump to
     run into infinite loops or crash when analyzing certain specially
     crafted packets. These bugs are considered security relevant as
     tcpdump is often used to analyze security relevant network traffic.

     All SUSE Linux products are affected.

     This is tracked by the Mitre CVE IDs CAN-2005-1278, CAN-2005-1279,
     and CAN-2005-1280.

   - perl-Net-Server remote denial of service attack

     A format string problem was found in the logging routines of the
     perl-Net-Server perl module collection. This could lead to a remote
     attacker being able to crash a server using the perl-Net-Server
     module.

     This is tracked by the Mitre CVE ID CAN-2005-1127.

     SUSE Linux versions 8.2 up to 9.3 are affected by this problem.

   - gaim remote denial of service attack

     Following security problems were fixed in the instant messenger
     gaim, which allowed malicious users to crash other users' gaim
     client. Mitre CVE IDs and affected products are listed below.

     - Crashes via malformed MSN malformed message (CAN-2005-1934,
       CAN-2005-1262, SUSE Linux >= 9.1).

     - Crash via specially named file sent via Yahoo (CAN-2005-1269, SUSE
       LINUX >= 9.1).

     - Crash via invalid Jabber file transfer request (CAN-2005-0967,
       SUSE Linux >= 9.1).

     - Crash via special IRC messages (CAN-2005-0966, SUSE Linux >= 9.0).

     - Crashes via malformed HTML tags (CAN-2005-0965, CAN-2005-0208,
       CAN-2005-0473).

     - Crash via malformed SNAC packet sent via AIM/ICQ (CAN-2005-0472,
       SUSE Linux <= 9.2).


   - pam_krb5 denial of service attack

     Two security-related bugs were fixed in the pam_krb5. The first
     bug is the use of the wrong UID to change the file-permissions on
     the ticket file which causes Kerberos to stop working correctly.
     The second bug can makes the PAM module crash due to a uninitialized
     variable.  Thanks to Ralf M獯ller for sending us the bug-report
     and patches.

     SUSE Linux versions 9.0 up to 9.3, SUSE Linux Enterprise Server 9
     and Novell Linux Desktop 9 are affected.

   - dhcpcd remote denial of service attack

     This update fixes a denial-of-service bug that can be triggered
     remotely by sending a malformed package to crash the client.

     This problem is tracked by the Mitre CVE ID  CAN-2005-1848.

     All SUSE Linux products are affected.


   - perl-Compress-Zlib potential denial of service attack

     The perl-Compress-Zlib perl module included a copy of zlib which
     is vulnerable to a denial of service attack tracked by the Mitre
     CVE CAN-2005-2096. This update removed the use of the internal copy
     and now uses the external version of zlib.

     This affects SUSE Linux versions 9.1 up to 9.3 and SUSE Linux
     Enterprise Server 9.


   - cacti remote command injection

     Various bugs were fixed in cacti, including three security-related
     bugs:
     - Cacti Authentication/Addslashes Bypass Vulnerability
     - Cacti Multiple SQL Injection Vulnerabilities
     - Cacti Remote Command Execution Vulnerability

     Note: Please check your config.php file, the new file
           config.php.rpmnew will have different options.

     These issue are tracked by the Mitre CVE IDs CAN-2005-2149 and
     CAN-2005-2148.

     SUSE Linux versions 9.1 up to 9.3 are affected by this problem.


   - krb5 remote denial of service

     The MIT Kerberos implementation is prone to heap corruption
     due to calling free() on random addresses (CAN-2005-1174,
     MITKRB5-SA-2005-002) and by calling free() twice on the same block
     (CAN-2005-1689, MITKRB5-SA-2005-003). Both bugs can be triggered
     remotely and may have the potential to be exploited to execute
     arbitrary code.  Additionally this update fixes a crash in MIT
     Kerberos V that is caused while comparing to principals/realms
     without checking for NULL pointers. There is nothing known about
     the exploit-ability of this bug. Thanks to Ralf Mueller for sending
     us the bug-report and patches.

     Only SUSE Linux Version 9.3 is affected by this problem, all earlier
     products used the heimdal kerberos implementation which is not
     affected by this problem.
______________________________________________________________________________

2) Pending Vulnerabilities, Solutions, and Work-Arounds

   - Acrobat Reader buffer overflow.

     A buffer overflow vulnerability was found in
     the Adobe Acrobat Reader version 5.
     
     We are currently building upgrades to version 7 for older
     products.
     
     SUSE Linux version 8.2 up to 9.2, SUSE Linux Enterprise Servers 8
     and 9, Novell Linux Desktop 9, Open Enterprise Server 9, SUSE Linux
     Desktop 1 are affected by this problem.

     It is tracked by the Mitre CVE ID CAN-2005-1625.

   - Various new Mozilla and Mozilla Firefox vulnerabilities

     Various new Mozilla Suite and Mozilla Firefox vulnerabilities
     were reported.
     
     We are preparing updates for these issues currently.

______________________________________________________________________________

3) Authenticity Verification and Additional Information

  - Announcement authenticity verification:

    SUSE security announcements are published via mailing lists and on Web
    sites. The authenticity and integrity of a SUSE security announcement is
    guaranteed by a cryptographic signature in each announcement. All SUSE
    security announcements are published with a valid signature.

    To verify the signature of the announcement, save it as text into a file
    and run the command

      gpg --verify <file>

    replacing <file> with the name of the file containing the announcement.
    The output for a valid signature looks like:

      gpg: Signature made <DATE> using RSA key ID 3D25D3D9
      gpg: Good signature from "SuSE Security Team <security@suse.de>"

    where <DATE> is replaced by the date the document was signed.

    If the security team's key is not contained in your key ring, you can
    import it from the first installation CD. To import the key, use the
    command

      gpg --import gpg-pubkey-3d25d3d9-36e12d04.asc

  - Package authenticity verification:

    SUSE update packages are available on many mirror FTP servers all over the
    world. While this service is considered valuable and important to the free
    and open source software community, the authenticity and integrity of a
    package needs to be verified to ensure that it has not been tampered with.

    The internal RPM package signatures provide an easy way to verify the
    authenticity of an RPM package. Use the command

      rpm -v --checksig <file.rpm>

    to verify the signature of the package, replacing <file.rpm> with the
    filename of the RPM package downloaded. The package is unmodified if it
    contains a valid signature from build@suse.de with the key ID 9C800ACA.

    This key is automatically imported into the RPM database (on RPMv4-based
    distributions) and the gpg key ring of 'root' during installation. You can
    also find it on the first installation CD and included at the end of this
    announcement.

  - SUSE runs two security mailing lists to which any interested party may
    subscribe:

    suse-security@suse.com
        -   General Linux and SUSE security discussion.
            All SUSE security announcements are sent to this list.
            To subscribe, send an e-mail to
                <suse-security-subscribe@suse.com>.

    suse-security-announce@suse.com
        -   SUSE's announce-only mailing list.
            Only SUSE's security announcements are sent to this list.
            To subscribe, send an e-mail to
                <suse-security-announce-subscribe@suse.com>.

    For general information or the frequently asked questions (FAQ) 
    send mail to <suse-security-info@suse.com> or 
    <suse-security-faq@suse.com>.

    =====================================================================
    SUSE's security contact is <security@suse.com> or <security@suse.de>.
    The <security@suse.de> public key is listed below.
    =====================================================================
______________________________________________________________________________

    The information in this advisory may be distributed or reproduced,
    provided that the advisory is not modified in any way. In particular, the
    clear text signature should show proof of the authenticity of the text.

    SUSE Linux Products GmbH provides no warranties of any kind whatsoever
    with respect to the information contained in this security advisory.

Type Bits/KeyID    Date       User ID
pub  2048R/3D25D3D9 1999-03-06 SuSE Security Team <security@suse.de>
pub  1024D/9C800ACA 2000-10-19 SuSE Package Signing Key <build@suse.de>

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