OpenPKG Security Advisory (tcpdump)

Posted by dave on Jan 16, 2004 5:12 AM EDT
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A bunch of vulnerabilities in tcpdump [0] were found and addressed in the past. All of them are in the area of packet decoding. Faulty decoder functions can result in denial of service attacks through infinite loops, memory starvation and application crashes. In the worst case arbitrary code execution is possible.

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OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org [E-mail:openpkg-security@openpkg.org] [E-mail:openpkg@openpkg.org] OpenPKG-SA-2004.002 16-Jan-2004 ________________________________________________________________________

Package: tcpdump Vulnerability: denial of service OpenPKG Specific: no

Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= tcpdump-3.8.1-20040108 >= tcpdump-3.8.1-20040116 OpenPKG 1.3 <= tcpdump-3.7.2-1.3.0 >= tcpdump-3.7.2-1.3.1 OpenPKG 1.2 <= tcpdump-3.7.1-1.2.1 >= tcpdump-3.7.1-1.2.2

Dependent Packages: none

Description: A bunch of vulnerabilities in tcpdump [0] were found and addressed in the past. All of them are in the area of packet decoding. Faulty decoder functions can result in denial of service attacks through infinite loops, memory starvation and application crashes. In the worst case arbitrary code execution is possible.

This OpenPKG update resolves all issues currently known, as shown in the following table:

tcpdump 371 371 372 381 OpenPKG 120 121 130 20020822 --- --- --- --- CAN-2002-0380 [2] nfs X - - - see past OpenPKG-SA [1] CAN-2002-1350 [3] bgp X - - - see past OpenPKG-SA [1] CAN-2003-0108 [4] isakmp X - - - see past OpenPKG-SA [1] depth X X X - (*) CAN-2003-0989 [5] isakmp X X X - updates CAN-2003-0108-isakmp CAN-2003-1029 [6] l2tp X X - - CAN-2004-0055 [7] radius X X X X CAN-2004-0057 [8] isakmp X X X X

(*) the vendor code fix for CAN-2003-0108 had two other unrelated code changes piggybacked. We removed the cosmetics (constify) and extracted an enhancement (depth).

Please check whether you are affected by running "/bin/rpm -q tcpdump". If you have the "tcpdump" package installed and its version is affected (see above), we recommend that you immediately upgrade it (see Solution). [9][10]

Solution: Select the updated source RPM appropriate for your OpenPKG release [11][12], fetch it from the OpenPKG FTP service [13][14] or a mirror location, verify its integrity [15], build a corresponding binary RPM from it [9] and update your OpenPKG installation by applying the binary RPM [10]. For the current release OpenPKG 1.3, perform the following operations to permanently fix the security problem (for other releases adjust accordingly).

$ ftp http://ftp.openpkg.org ftp> bin ftp> cd release/1.3/UPD ftp> get tcpdump-3.7.2-1.3.1.src.rpm ftp> bye $ /bin/rpm -v --checksig tcpdump-3.7.2-1.3.1.src.rpm $ /bin/rpm --rebuild tcpdump-3.7.2-1.3.1.src.rpm $ su - # /bin/rpm -Fvh /RPM/PKG/tcpdump-3.7.2-1.3.1.*.rpm ________________________________________________________________________

References: [0] http://www.tcpdump.org/ [1] http://www.openpkg.org/security/OpenPKG-SA-2003.014-tcpdump.html [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0380 [3] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-1350 [4] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0108 [5] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0989 [6] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-1029 [7] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0055 [8] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0057 [9] http://www.openpkg.org/tutorial.html#regular-source [10] http://www.openpkg.org/tutorial.html#regular-binary [11] ftp://ftp.openpkg.org/release/1.2/UPD/tcpdump-3.7.1-1.2.2.src.rpm [12] ftp://ftp.openpkg.org/release/1.3/UPD/tcpdump-3.7.2-1.3.1.src.rpm [13] ftp://ftp.openpkg.org/release/1.2/UPD/ [14] ftp://ftp.openpkg.org/release/1.3/UPD/ [15] http://www.openpkg.org/security.html#signature ________________________________________________________________________

For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG " (ID 63C4CB9F) of the OpenPKG project which you can retrieve from http://pgp.openpkg.org and hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/ for details on how to verify the integrity of this advisory. ________________________________________________________________________

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