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Mail server administrators should seriously consider upgrading their servers

Security problems were found in the mail packages UW-Imap and cyrus-imapd the last week.


  1. UW-IMAP, Suse announcement
  2. Cyrus-imapd, Suse announcement


Security vulnerabilities are found in the University of Washington IMAP (UW-IMAP) server. Updated packages are now available for GENTOO, MANDRAKE, REDHAT and SUSE. The problem is assigned CAN-2005-0198.

A similar problem was found in the Cyrus-Imap server last week, updated packages for Cyrus-Imap are also available for these distributions.

It is also a generally good idea to upgrade curl while you are at it.

1. UW-IMAP, Suse announcement

  ```
  -----BEGIN PGP SIGNED MESSAGE-----
  
  ______________________________________________________________________________
  
                          SUSE Security Announcement
  
          Package:                imap
          Announcement-ID:        SUSE-SA:2005:012
          Date:                   Tue, 1 Mar 2005 10:00:00 +0000
          Affected products:      8.2, 9.0, 9.1, 9.2
                                  SUSE Linux Enterprise Server 8, 9
          Vulnerability Type:     remote authentication bypass
          Severity (1-10):        6
          SUSE default package:   no
          Cross References:       CAN-2005-0198
  
      Content of this advisory:
          1) security vulnerability resolved:
               CRAM-MD5 authentication bug
             problem description
          2) solution/workaround
          3) special instructions and notes
          4) package location and checksums
          5) pending vulnerabilities, solutions, workarounds:
              See SUSE Security Summary Report.
          6) standard appendix (further information)
  
  ______________________________________________________________________________
  
  1) problem description, brief discussion
  
      The University of Washington imap daemon can be used to access mails
      remotely using the IMAP protocol.
      
      This update fixes a logical error in the challenge response
      authentication mechanism CRAM-MD5 used by UW IMAP. Due to this
      mistake a remote attacker can gain access to the IMAP server as
      arbitrary user.
  
      This is tracked by the Mitre CVE ID CAN-2005-0198.
  
  2) solution/workaround
  
      None, please install the updated packages.
  
  3) special instructions and notes
  
      None.
  
  4) package location and checksums
  
      Please download the update package for your distribution and verify its
      integrity by the methods listed in section 3) of this announcement.
      Then, install the package using the command "rpm -Fhv file.rpm" to apply
      the update.
      Our maintenance customers are being notified individually. The packages
      are being offered to install from the maintenance web.
  
      
      x86 Platform:
      
      SUSE Linux 9.2:
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/imap-2004a-3.2.i586.rpm
             2b4cf0f70fb0164a90f6e73b66f28c5a
      
      SUSE Linux 9.1:
      ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/imap-2002e-92.4.i586.rpm
             32eb45928cf31bb0cbae78139303561b
      
      SUSE Linux 9.0:
      ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/imap-2002d-59.i586.rpm
             b8af4a9008cb1d311f650700b6d642c5
      
      SUSE Linux 8.2:
      ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/imap-2002-56.i586.rpm
             6f73b1197b2a095fc30b8afde860f5fe
      
      x86-64 Platform:
      
      SUSE Linux 9.2:
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/imap-2004a-3.2.x86_64.rpm
             a6a79a3e1459dd1d5799e40257684d4e
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/imap-2004a-3.2.src.rpm
             18201a6f78b73d2250f6ea0e614049b2
      
      SUSE Linux 9.1:
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/imap-2002e-92.4.x86_64.rpm
             007c9777aacc36dec72067cf6ac39e7d
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/imap-2002e-92.4.src.rpm
             9bf8dda300636e712f164d784bc131a5
      
      SUSE Linux 9.0:
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/imap-2002d-59.x86_64.rpm
             25ffa1aa178c962753bc26483d0e9354
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/imap-2002d-59.src.rpm
             2da3ea9899a1ddf909d7dc5059138e7d
  
  
  ______________________________________________________________________________
  
  5)  Pending vulnerabilities in SUSE Distributions and Workarounds:
  
      See SUSE Security Summary Report.
  
  ______________________________________________________________________________
  
  6)  standard appendix: authenticity verification, additional information
  
    - Package authenticity verification:
  
      SUSE update packages are available on many mirror ftp servers all over
      the world. While this service is being considered valuable and important
      to the free and open source software community, many users wish to be
      sure about the origin of the package and its content before installing
      the package. There are two verification methods that can be used
      independently from each other to prove the authenticity of a downloaded
      file or rpm package:
      1) md5sums as provided in the (cryptographically signed) announcement.
      2) using the internal gpg signatures of the rpm package.
  
      1) execute the command
          md5sum <name-of-the-file.rpm>
         after you downloaded the file from a SUSE ftp server or its mirrors.
         Then, compare the resulting md5sum with the one that is listed in the
         announcement. Since the announcement containing the checksums is
         cryptographically signed (usually using the key security@suse.de),
         the checksums show proof of the authenticity of the package.
         We disrecommend to subscribe to security lists which cause the
         email message containing the announcement to be modified so that
         the signature does not match after transport through the mailing
         list software.
         Downsides: You must be able to verify the authenticity of the
         announcement in the first place. If RPM packages are being rebuilt
         and a new version of a package is published on the ftp server, all
         md5 sums for the files are useless.
  
      2) 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, where <file.rpm> is the
         filename of the rpm package that you have downloaded. Of course,
         package authenticity verification can only target an un-installed rpm
         package file.
         Prerequisites:
          a) gpg is installed
          b) The package is signed using a certain key. The public part of this
             key must be installed by the gpg program in the directory
             ~/.gnupg/ under the user's home directory who performs the
             signature verification (usually root). You can import the key
             that is used by SUSE in rpm packages for SUSE Linux by saving
             this announcement to a file ("announcement.txt") and
             running the command (do "su -" to be root):
              gpg --batch; gpg < announcement.txt | gpg --import
             SUSE Linux distributions version 7.1 and thereafter install the
             key "build@suse.de" upon installation or upgrade, provided that
             the package gpg is installed. The file containing the public key
             is placed at the top-level directory of the first CD (pubring.gpg)
             and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
  
  
    - SUSE runs two security mailing lists to which any interested party may
      subscribe:
  
      suse-security@suse.com
          -   general/linux/SUSE security discussion.
              All SUSE security announcements are sent to this list.
              To subscribe, send an email 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 email 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> respectively.
  
      =====================================================================
      SUSE's security contact is <security@suse.com> or <security@suse.de>.
  @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,
      it is desired that the clear-text signature shows proof of the
      authenticity of the text.
      SUSE Linux AG makes 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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  -- 
  To unsubscribe, e-mail: suse-security-announce-unsubscribe@suse.com
  For additional commands, e-mail: suse-security-announce-help@suse.com
  
  
  ```

2. Cyrus-imapd, Suse announcement

  
  
  
  ```
  -----BEGIN PGP SIGNED MESSAGE-----
  
  ______________________________________________________________________________
  
                          SUSE Security Announcement
  
          Package:                cyrus-imapd
          Announcement-ID:        SUSE-SA:2005:009
          Date:                   Thu, 24 Feb 2005 14:00:00 +0000
          Affected products:      8.2, 9.0, 9.1, 9.2
                                  SUSE Linux Enterprise Server 8, 9
          Vulnerability Type:     remote code execution
          Severity (1-10):        7
          SUSE default package:   yes
          Cross References:       None.
  
      Content of this advisory:
          1) security vulnerability resolved:
               several 1 byte buffer overflows fixed
          2) solution/workaround
          3) special instructions and notes
          4) package location and checksums
          5) pending vulnerabilities, solutions, workarounds:
               See SUSE Security Summary Report.
          6) standard appendix (further information)
  
  ______________________________________________________________________________
  
  1) problem description, brief discussion
  
      This update fixes one-byte buffer overruns in the cyrus-imapd IMAP
      server package.
  
      Several overruns were fixed in the IMAP annote extension as well as
      in cached header handling which can be run by an authenticated user.
  
      Additionally bounds checking in fetchnews was improved to avoid
      exploitation by a peer news admin.
  
      Please note that one-byte buffer overflows can not be exploited to
      execute arbitrary commands by manipulating the saved registers on
      the stack if the compiler used (gcc >= 3) aligns the stack space.
  
      Nevertheless the code behavior may be manipulated by overwriting
      local variables. The result is not known but ranges between a
      denial-of-service condition and privilege escalation.
  
      This update backports bugfixes from the upstream release of
      cyrus-imapd 2.2.11 announced on:
  
      http://asg.web.cmu.edu/archive/message.php?mailbox=archive.info-cyrus&msg=33723
  
  2) solution/workaround
  
      Install the updated packages.
      
      Make sure you restart cyrus-imapd by running
              /sbin/rccyrus try-restart
  
  3) special instructions and notes
  
      None.
  
  4) package location and checksums
  
      Please download the update package for your distribution and verify its
      integrity by the methods listed in section 3) of this announcement.
      Then, install the package using the command "rpm -Fhv file.rpm" to apply
      the update.
      Our maintenance customers are being notified individually. The packages
      are being offered to install from the maintenance web.
  
      
      x86 Platform:
      
      SUSE Linux 9.2:
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/i586/cyrus-imapd-2.2.8-6.5.i586.rpm
             3bfbec25eb82d07a8195fb621876cf4b
      
      SUSE Linux 9.1:
      ftp://ftp.suse.com/pub/suse/i386/update/9.1/rpm/i586/cyrus-imapd-2.2.3-83.22.i586.rpm
             e90855625f9d66bed10f0d601517ca7f
      
      SUSE Linux 9.0:
      ftp://ftp.suse.com/pub/suse/i386/update/9.0/rpm/i586/cyrus-imapd-2.1.15-91.i586.rpm
             b3f0a8e7ab5780b2544a2c5ce9671b18
      
      SUSE Linux 8.2:
      ftp://ftp.suse.com/pub/suse/i386/update/8.2/rpm/i586/cyrus-imapd-2.1.12-77.i586.rpm
             989a125263e4388b2e3825262e495923
      
      x86-64 Platform:
      
      SUSE Linux 9.2:
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/x86_64/cyrus-imapd-2.2.8-6.5.x86_64.rpm
             267540ff1676d534dc0bab3b075a0b32
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/i386/update/9.2/rpm/src/cyrus-imapd-2.2.8-6.5.src.rpm
             8f78ab5817abd9a354473a6f10f6c5d5
      
      SUSE Linux 9.1:
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/x86_64/cyrus-imapd-2.2.3-83.22.x86_64.rpm
             0b51738a00dbb8cc71d1277d1b370576
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.1/rpm/src/cyrus-imapd-2.2.3-83.22.src.rpm
             b1316bfae2476c5e880e581893cad224
      
      SUSE Linux 9.0:
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/x86_64/cyrus-imapd-2.1.15-91.x86_64.rpm
             4c5bc7aa5de6ca5a9ef2758b17b20ba3
      source rpm(s):
      ftp://ftp.suse.com/pub/suse/x86_64/update/9.0/rpm/src/cyrus-imapd-2.1.15-91.src.rpm
             c6ce2fd455ddc73b00e4092b5332335f
  
  
  ______________________________________________________________________________
  
  5)  Pending vulnerabilities in SUSE Distributions and Workarounds:
  
      See SUSE Security Summary Report.
  
  ______________________________________________________________________________
  
  6)  standard appendix: authenticity verification, additional information
  
    - Package authenticity verification:
  
      SUSE update packages are available on many mirror ftp servers all over
      the world. While this service is being considered valuable and important
      to the free and open source software community, many users wish to be
      sure about the origin of the package and its content before installing
      the package. There are two verification methods that can be used
      independently from each other to prove the authenticity of a downloaded
      file or rpm package:
      1) md5sums as provided in the (cryptographically signed) announcement.
      2) using the internal gpg signatures of the rpm package.
  
      1) execute the command
          md5sum <name-of-the-file.rpm>
         after you downloaded the file from a SUSE ftp server or its mirrors.
         Then, compare the resulting md5sum with the one that is listed in the
         announcement. Since the announcement containing the checksums is
         cryptographically signed (usually using the key security@suse.de),
         the checksums show proof of the authenticity of the package.
         We disrecommend to subscribe to security lists which cause the
         email message containing the announcement to be modified so that
         the signature does not match after transport through the mailing
         list software.
         Downsides: You must be able to verify the authenticity of the
         announcement in the first place. If RPM packages are being rebuilt
         and a new version of a package is published on the ftp server, all
         md5 sums for the files are useless.
  
      2) 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, where <file.rpm> is the
         filename of the rpm package that you have downloaded. Of course,
         package authenticity verification can only target an un-installed rpm
         package file.
         Prerequisites:
          a) gpg is installed
          b) The package is signed using a certain key. The public part of this
             key must be installed by the gpg program in the directory
             ~/.gnupg/ under the user's home directory who performs the
             signature verification (usually root). You can import the key
             that is used by SUSE in rpm packages for SUSE Linux by saving
             this announcement to a file ("announcement.txt") and
             running the command (do "su -" to be root):
              gpg --batch; gpg < announcement.txt | gpg --import
             SUSE Linux distributions version 7.1 and thereafter install the
             key "build@suse.de" upon installation or upgrade, provided that
             the package gpg is installed. The file containing the public key
             is placed at the top-level directory of the first CD (pubring.gpg)
             and at ftp://ftp.suse.com/pub/suse/pubring.gpg-build.suse.de .
  
  
    - SUSE runs two security mailing lists to which any interested party may
      subscribe:
  
      suse-security@suse.com
          -   general/linux/SUSE security discussion.
              All SUSE security announcements are sent to this list.
              To subscribe, send an email 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 email 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> respectively.
  
      =====================================================================
      SUSE's security contact is <security@suse.com> or <security@suse.de>.
  @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,
      it is desired that the clear-text signature shows proof of the
      authenticity of the text.
      SUSE Linux AG makes 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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  To unsubscribe, e-mail: suse-security-announce-unsubscribe@suse.com
  For additional commands, e-mail: suse-security-announce-help@suse.com
  ```
  

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