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Several buffer overflows were found in the tcpdump package by FreeBSD developers during a code audit, in versions prior to 3.5. However, newer versions of tcpdump, including 3.6.2, are also vulnerable to another buffer overflow in the AFS RPC decoding functions, which was discovered by Nick Cleaton. These vulnerabilities could be used by a remote attacker to crash the the tcpdump process or possibly even be exploited to execute arbitrary code as the user running tcpdump, which is usually root. The newer libpcap 0.6 has also been audited to make it more safe by implementing better buffer boundary checks in several functions.
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
________________________________________________________________________
Mandrake Linux Security Update Advisory
________________________________________________________________________
Package name: tcpdump
Advisory ID: MDKSA-2002:032
Date: May 16th, 2002
Affected versions: 7.1, 7.2, 8.0, 8.1, 8.2, Corporate Server 1.0.1
Single Network Firewall 7.2
________________________________________________________________________
Problem Description:
Several buffer overflows were found in the tcpdump package by FreeBSD
developers during a code audit, in versions prior to 3.5. However,
newer versions of tcpdump, including 3.6.2, are also vulnerable to
another buffer overflow in the AFS RPC decoding functions, which was
discovered by Nick Cleaton. These vulnerabilities could be used by
a remote attacker to crash the the tcpdump process or possibly even
be exploited to execute arbitrary code as the user running tcpdump,
which is usually root.
The newer libpcap 0.6 has also been audited to make it more safe by
implementing better buffer boundary checks in several functions.
________________________________________________________________________
References:
http://www.ciac.org/ciac/bulletins/l-015.shtml
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-01:48.tcpdump.asc
________________________________________________________________________
Updated Packages:
Linux-Mandrake 7.1:
a17ec464d576bdbd870dc6a5d25fc59d 7.1/RPMS/libpcap-0.6.2-3.2mdk.i586.rpm
ed780612ab8620e84e8310432a5df0b9 7.1/RPMS/libpcap-devel-0.6.2-3.2mdk.i586.rpm
a186519910760e36b7e50456412ab20e 7.1/RPMS/tcpdump-3.6.2-2.2mdk.i586.rpm
5e6091d2f916b180ffc80d60e2005a49 7.1/SRPMS/libpcap-0.6.2-3.2mdk.src.rpm
a997724147a333e27e72670bff28e5ee 7.1/SRPMS/tcpdump-3.6.2-2.2mdk.src.rpm
Linux-Mandrake 7.2:
e39a58560c3ec60a574c63dd9e383fda 7.2/RPMS/libpcap-0.6.2-3.2mdk.i586.rpm
4600b4d1a435d17a77560a36e28ddc70 7.2/RPMS/libpcap-devel-0.6.2-3.2mdk.i586.rpm
fc014253b27e44c8a230f936d7eadf9e 7.2/RPMS/tcpdump-3.6.2-2.2mdk.i586.rpm
5e6091d2f916b180ffc80d60e2005a49 7.2/SRPMS/libpcap-0.6.2-3.2mdk.src.rpm
a997724147a333e27e72670bff28e5ee 7.2/SRPMS/tcpdump-3.6.2-2.2mdk.src.rpm
Mandrake Linux 8.0:
d8deeabab302271054ecad942a14013e 8.0/RPMS/libpcap0-0.6.2-3.1mdk.i586.rpm
b2aa6d27578b8699640b6ed2e76ba228 8.0/RPMS/libpcap0-devel-0.6.2-3.1mdk.i586.rpm
16eac5435d8b8e1075c10d393a2914a5 8.0/RPMS/tcpdump-3.6.2-2.1mdk.i586.rpm
4b1956a781b1185e693a26037d4804a5 8.0/SRPMS/libpcap-0.6.2-3.1mdk.src.rpm
683c3b6f0ae7754090cbcf480cd731b0 8.0/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Mandrake Linux 8.0/ppc:
4a4f5cca7fc50d1616b857b89afe3ae3 ppc/8.0/RPMS/libpcap0-0.6.2-3.1mdk.ppc.rpm
11be44f15a54a9654cd48b5b8aed04ba ppc/8.0/RPMS/libpcap0-devel-0.6.2-3.1mdk.ppc.rpm
68255f8f80d88b91fd488d6379db81df ppc/8.0/RPMS/tcpdump-3.6.2-2.1mdk.ppc.rpm
4b1956a781b1185e693a26037d4804a5 ppc/8.0/SRPMS/libpcap-0.6.2-3.1mdk.src.rpm
683c3b6f0ae7754090cbcf480cd731b0 ppc/8.0/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Mandrake Linux 8.1:
39715d1c613144e859f0386ee583377a 8.1/RPMS/tcpdump-3.6.2-2.1mdk.i586.rpm
683c3b6f0ae7754090cbcf480cd731b0 8.1/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Mandrake Linux 8.1/ia64:
6331901e596e243099aa6474481ea88a ia64/8.1/RPMS/tcpdump-3.6.2-2.1mdk.ia64.rpm
683c3b6f0ae7754090cbcf480cd731b0 ia64/8.1/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Mandrake Linux 8.2:
8c36a78c9a086c2d582d70d431533650 8.2/RPMS/tcpdump-3.6.2-2.1mdk.i586.rpm
683c3b6f0ae7754090cbcf480cd731b0 8.2/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Mandrake Linux 8.2/ppc:
081041c2713a9c76c5bf2fc727a03c45 ppc/8.2/RPMS/tcpdump-3.6.2-2.1mdk.ppc.rpm
683c3b6f0ae7754090cbcf480cd731b0 ppc/8.2/SRPMS/tcpdump-3.6.2-2.1mdk.src.rpm
Corporate Server 1.0.1:
a17ec464d576bdbd870dc6a5d25fc59d 1.0.1/RPMS/libpcap-0.6.2-3.2mdk.i586.rpm
ed780612ab8620e84e8310432a5df0b9 1.0.1/RPMS/libpcap-devel-0.6.2-3.2mdk.i586.rpm
a186519910760e36b7e50456412ab20e 1.0.1/RPMS/tcpdump-3.6.2-2.2mdk.i586.rpm
5e6091d2f916b180ffc80d60e2005a49 1.0.1/SRPMS/libpcap-0.6.2-3.2mdk.src.rpm
a997724147a333e27e72670bff28e5ee 1.0.1/SRPMS/tcpdump-3.6.2-2.2mdk.src.rpm
Single Network Firewall 7.2:
e39a58560c3ec60a574c63dd9e383fda snf7.2/RPMS/libpcap-0.6.2-3.2mdk.i586.rpm
4600b4d1a435d17a77560a36e28ddc70 snf7.2/RPMS/libpcap-devel-0.6.2-3.2mdk.i586.rpm
fc014253b27e44c8a230f936d7eadf9e snf7.2/RPMS/tcpdump-3.6.2-2.2mdk.i586.rpm
5e6091d2f916b180ffc80d60e2005a49 snf7.2/SRPMS/libpcap-0.6.2-3.2mdk.src.rpm
a997724147a333e27e72670bff28e5ee snf7.2/SRPMS/tcpdump-3.6.2-2.2mdk.src.rpm
________________________________________________________________________
Bug IDs fixed (see https://qa.mandrakesoft.com 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:
http://www.mandrakesecure.net/en/ftp.php
Please verify the update prior to upgrading to ensure the integrity of
the downloaded package. You can do this with the command:
rpm --checksig <filename>
All packages are signed by MandrakeSoft for security. You can obtain
the GPG public key of the Mandrake Linux Security Team from:
https://www.mandrakesecure.net/RPM-GPG-KEYS
Please be aware that sometimes it takes the mirrors a few hours to
update.
You can view other update advisories for Mandrake Linux at:
http://www.mandrakesecure.net/en/advisories/
MandrakeSoft has several security-related mailing list services that
anyone can subscribe to. Information on these lists can be obtained by
visiting:
http://www.mandrakesecure.net/en/mlist.php
If you want to report vulnerabilities, please contact
security@linux-mandrake.com
________________________________________________________________________
Type Bits/KeyID Date User ID
pub 1024D/22458A98 2000-07-10 Linux Mandrake Security Team
<security@linux-mandrake.com>
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