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Home » Hacking News » MDKSA-2002:046-openssl


by Nikola Strahija on July 31st, 2002 An audit of the OpenSSL code by A.L. Digital Ltd and The Bunker, under the DARPA program CHATS, discovered a number of vulnerabilities in the OpenSSL code that are all potentially remotely exploitable.

From the OpenSSL advisory:

1. The client master key in SSL2 could be oversized and overrun a
buffer. This vulnerability was also independently discovered by
consultants at Neohapsis ( who have also
demonstrated that the vulerability is exploitable. Exploit code is
NOT available at this time.

2. The session ID supplied to a client in SSL3 could be oversized and
overrun a buffer.

3. The master key supplied to an SSL3 server could be oversized and
overrun a stack-based buffer. This issues only affects OpenSSL
0.9.7 with Kerberos enabled.

4. Various buffers for ASCII representations of integers were too
small on 64 bit platforms.

At the same time, various potential buffer overflows have had
assertions added; these are not known to be exploitable.

Finally, a vulnerability was found by Adi Stav and James Yonan
independantly in the ASN1 parser which can be confused by supplying it
with certain invalid encodings. There are no known exploits for this

All of these vulnerabilities are fixed in OpenSSL 0.9.6f. Patches have
been applied to the versions of OpenSSL provided in this update to fix
all of these problems, except for the ASN1 vulnerability, which a fix
will be provided for once MandrakeSoft has had a chance to QA the new
packages. In the meantime, it is is strongly encouraged that all users
upgrade to these OpenSSL packages.


Updated Packages:

Linux-Mandrake 7.1:
58faab2dc1c940743311888876580f3f 7.1/RPMS/openssl-0.9.5a-4.1mdk.i586.rpm
fac4725e0a9e1cc981c9c86a0bb8eeed 7.1/SRPMS/openssl-0.9.5a-4.1mdk.src.rpm

Linux-Mandrake 7.2:
ff9061b2b2f541cf537c9373df246dbb 7.2/RPMS/openssl-0.9.5a-9.1mdk.i586.rpm
720b889b1296b6205451a29d888468e1 7.2/SRPMS/openssl-0.9.5a-9.1mdk.src.rpm

Mandrake Linux 8.0:
8f1fd965bfca723a047bfe1d25247586 8.0/RPMS/openssl-0.9.6-8.1mdk.i586.rpm
acf90eb5c7570271e6602e0a9b2f6d8e 8.0/RPMS/openssl-devel-0.9.6-8.1mdk.i586.rpm
dcf49c70aa8b4e5483677be7815dcec5 8.0/SRPMS/openssl-0.9.6-8.1mdk.src.rpm

Mandrake Linux 8.0/ppc:
db709e87bc29baf801f4f2f5ec472636 ppc/8.0/RPMS/openssl-0.9.6-8.1mdk.ppc.rpm
dcf49c70aa8b4e5483677be7815dcec5 ppc/8.0/SRPMS/openssl-0.9.6-8.1mdk.src.rpm

Mandrake Linux 8.1:
d00dbf479e5b5e911038e3da41a8f295 8.1/RPMS/libopenssl0-0.9.6b-1.1mdk.i586.rpm
434b7cce94cac8020efdcae76cff7054 8.1/RPMS/openssl-0.9.6b-1.1mdk.i586.rpm
c404beecf05dfed1673b319f80777e65 8.1/SRPMS/openssl-0.9.6b-1.1mdk.src.rpm

Mandrake Linux 8.1/ia64:
5de61993432b33b17a67c033a176e240 ia64/8.1/RPMS/openssl-0.9.6b-1.1mdk.ia64.rpm
c404beecf05dfed1673b319f80777e65 ia64/8.1/SRPMS/openssl-0.9.6b-1.1mdk.src.rpm

Mandrake Linux 8.2:
933cb11b417f19a76506f198cb9a0f46 8.2/RPMS/libopenssl0-0.9.6c-2.1mdk.i586.rpm
28f923613fb0c76e9732f99267591a84 8.2/RPMS/openssl-0.9.6c-2.1mdk.i586.rpm
d5e9dd5cb1fdc430723c17030d592d76 8.2/SRPMS/openssl-0.9.6c-2.1mdk.src.rpm

Mandrake Linux 8.2/ppc:
033c1b2f03223749ccc4333d4060a818 ppc/8.2/RPMS/openssl-0.9.6c-2.1mdk.ppc.rpm
d5e9dd5cb1fdc430723c17030d592d76 ppc/8.2/SRPMS/openssl-0.9.6c-2.1mdk.src.rpm

Corporate Server 1.0.1:
58faab2dc1c940743311888876580f3f 1.0.1/RPMS/openssl-0.9.5a-4.1mdk.i586.rpm
fac4725e0a9e1cc981c9c86a0bb8eeed 1.0.1/SRPMS/openssl-0.9.5a-4.1mdk.src.rpm

Single Network Firewall 7.2:
ff9061b2b2f541cf537c9373df246dbb snf7.2/RPMS/openssl-0.9.5a-9.1mdk.i586.rpm
720b889b1296b6205451a29d888468e1 snf7.2/SRPMS/openssl-0.9.5a-9.1mdk.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

[email protected]

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