OpenPKG Security Advisory (tcpdump)
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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