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Mandrake: bind multiple vulnerabilities Print E-mail
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Posted by Team   
Mandrake The security research company ISS (Internet Security Services) has discovered several vulnerabilities in the BIND8 name server, including a remotely exploitable buffer overflow.


                Mandrake Linux Security Update Advisory

Package name:           bind
Advisory ID:            MDKSA-2002:077
Date:                   November 14th, 2002

Affected versions:      7.2, Single Network Firewall 7.2

Problem Description:

 Several vulnerabilities were discovered in the BIND8 DNS server by ISS
 (Internet Security Services), including a remotely exploitable buffer
 overflow.  The first vulnerability is how named handles SIG records;
 this buffer overflow can be exploited to obtain access to the victim
 host with the privilege of the user the named process is running as.
 By default, Mandrake Linux is configured to run the named process as
 the named user.  To successfully exploit this vulnerability, the
 attacker must control an existing DNS domain and must be allowed to
 perform a recursive query.
 A possible work-around is to restrict recursive requests, however
 MandrakeSoft encourages all users to upgrade to the provided BIND9
 packages.  You can also completely disable recursion by adding
 "recursion no;" to the options section of /etc/named.conf.
 Several Denial of Service problems also exist in BIND8 that allow
 attackers to terminate the named process.  At least one of these
 vulnerabilities seems to be exploitable even when the attacker is
 not permitted to perform recursive queries, so the work-around noted
 above is not effective against this DoS.
 Both problems are not reported to effect BIND9.  As Linux-Mandrake
 7.2 and Single Network Firewall 7.2 are the only supported distributions
 to still ship BIND8, we have elected to upgrade to both a patched
 version of BIND8 and BIND9.  The BIND8 packages contain the patch
 ISC made available late on the 13th, contrary to their original
 advisory which called for them to be made available next week.  Despite
 this, however, MandrakeSoft encourages everyone who is able to upgrade
 to BIND9 rather than BIND8.
 The MandrakeSoft security team wishes to apologize to MandrakeSoft
 customers for not being able to provide timely fixes for this problem,
 and regrets the inability of the ISC to work with the Internet community
 at large to provide adequate protection to users of BIND.


Updated Packages:
 Linux-Mandrake 7.2:
 f3ca1559f7d2fbe17a2ec6dab327bb7e  7.2/RPMS/bind-8.3.3-2.1mdk.i586.rpm
 0ccd937ec59aa9775f79b05f62d4718c  7.2/RPMS/bind-9.2.1-2.3mdk.i586.rpm
 783ab2327c7e7983a07a8043d3355bbb  7.2/RPMS/bind-devel-8.3.3-2.1mdk.i586.rpm
 bbf717f0f71098ab6c2293d9dbd1c1bd  7.2/RPMS/bind-devel-9.2.1-2.3mdk.i586.rpm
 47a2418adcd190b22956407a667fbc9e  7.2/RPMS/bind-utils-8.3.3-2.1mdk.i586.rpm
 56b9c086c299cdfd367ae87f14db711b  7.2/RPMS/bind-utils-9.2.1-2.3mdk.i586.rpm
 df34fbecce2e6c61695fcee11a525fea  7.2/RPMS/caching-nameserver-8.1-3.2mdk.noarch.rpm
 f9d914230ec37be01ad4d00abcde0280  7.2/SRPMS/bind-8.3.3-2.1mdk.src.rpm
 8660bd628168c52478b0f766d0ab676c  7.2/SRPMS/bind-9.2.1-2.3mdk.src.rpm
 904b9064763803d24afc79e7140146a4  7.2/SRPMS/caching-nameserver-8.1-3.2mdk.src.rpm

 Single Network Firewall 7.2:
 f3ca1559f7d2fbe17a2ec6dab327bb7e  snf7.2/RPMS/bind-8.3.3-2.1mdk.i586.rpm
 0ccd937ec59aa9775f79b05f62d4718c  snf7.2/RPMS/bind-9.2.1-2.3mdk.i586.rpm
 47a2418adcd190b22956407a667fbc9e  snf7.2/RPMS/bind-utils-8.3.3-2.1mdk.i586.rpm
 56b9c086c299cdfd367ae87f14db711b  snf7.2/RPMS/bind-utils-9.2.1-2.3mdk.i586.rpm
 df34fbecce2e6c61695fcee11a525fea  snf7.2/RPMS/caching-nameserver-8.1-3.2mdk.noarch.rpm
 f9d914230ec37be01ad4d00abcde0280  snf7.2/SRPMS/bind-8.3.3-2.1mdk.src.rpm
 8660bd628168c52478b0f766d0ab676c  snf7.2/SRPMS/bind-9.2.1-2.3mdk.src.rpm
 904b9064763803d24afc79e7140146a4  snf7.2/SRPMS/caching-nameserver-8.1-3.2mdk.src.rpm

Bug IDs fixed (see for more information):

To upgrade automatically, use MandrakeUpdate.  The verification of md5
checksums and GPG signatures is performed automatically for you.

If you want to upgrade manually, download the updated package from one
of our FTP server mirrors and upgrade with "rpm -Fvh *.rpm".  A list of
FTP mirrors can be obtained from:

Please verify the update prior to upgrading to ensure the integrity of
the downloaded package.  You can do this with the command:

  rpm --checksig 

All packages are signed by MandrakeSoft for security.  You can obtain
the GPG public key of the Mandrake Linux Security Team from:

Please be aware that sometimes it takes the mirrors a few hours to

You can view other update advisories for Mandrake Linux at:

MandrakeSoft has several security-related mailing list services that
anyone can subscribe to.  Information on these lists can be obtained by

If you want to report vulnerabilities, please contact

Type Bits/KeyID     Date       User ID
pub  1024D/22458A98 2000-07-10 Linux Mandrake Security Team

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