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Home » Hacking News » MDKSA-2002:046-1-openssl


by Nikola Strahija on August 7th, 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.


These new OpenSSL packages are available to additionally fix the ASN1
vulnerability described above. All Mandrake Linux users are encouraged
to upgrade to these new packages.


Updated Packages:

Linux-Mandrake 7.1:
6a9c94a8966ff820b23680fd369cbd51 7.1/RPMS/openssl-0.9.5a-4.4mdk.i586.rpm
d43942ce031b3f2e407a0feeb86da5f5 7.1/SRPMS/openssl-0.9.5a-4.4mdk.src.rpm

Linux-Mandrake 7.2:
363755252a9a9c0b2e4a9e821ebb2f65 7.2/RPMS/openssl-0.9.5a-9.3mdk.i586.rpm
6bfee5aae5b7fb76b8bb7d8ebfa4987c 7.2/SRPMS/openssl-0.9.5a-9.3mdk.src.rpm

Mandrake Linux 8.0:
9abb098a6f620d41039ad587e0447610 8.0/RPMS/openssl-0.9.6-8.3mdk.i586.rpm
64e4b4701b1a4d0f9a7ad044352450ae 8.0/RPMS/openssl-devel-0.9.6-8.3mdk.i586.rpm
de7dc20f85590dc9601418a55a9e7da4 8.0/SRPMS/openssl-0.9.6-8.3mdk.src.rpm

Mandrake Linux 8.0/ppc:
d45f19993e0213bf620dedcc5458a4c9 ppc/8.0/RPMS/openssl-0.9.6-8.3mdk.ppc.rpm
de7dc20f85590dc9601418a55a9e7da4 ppc/8.0/SRPMS/openssl-0.9.6-8.3mdk.src.rpm

Mandrake Linux 8.1:
c718c4e2b759c7e03ae15565f87449d3 8.1/RPMS/libopenssl0-0.9.6b-1.3mdk.i586.rpm
0fa07e0d141879d2e0caf98888e9360c 8.1/RPMS/openssl-0.9.6b-1.3mdk.i586.rpm
21211edf6739b34b0145c4f7d7c6dfbd 8.1/SRPMS/openssl-0.9.6b-1.3mdk.src.rpm

Mandrake Linux 8.1/ia64:
e607c370abaae3313fff4feda2974252 ia64/8.1/RPMS/openssl-0.9.6b-1.3mdk.ia64.rpm
21211edf6739b34b0145c4f7d7c6dfbd ia64/8.1/SRPMS/openssl-0.9.6b-1.3mdk.src.rpm

Mandrake Linux 8.2:
f7c84a65cad632cd9c34c4d8d591043d 8.2/RPMS/libopenssl0-0.9.6c-2.3mdk.i586.rpm
73ac51025179f4a558bc565c102937c5 8.2/RPMS/openssl-0.9.6c-2.3mdk.i586.rpm
aacc3a9db49848c990b0a2f45d768151 8.2/SRPMS/openssl-0.9.6c-2.3mdk.src.rpm

Mandrake Linux 8.2/ppc:
6e31a4d22d08e9bdf8eb065f55c1e46d ppc/8.2/RPMS/openssl-0.9.6c-2.3mdk.ppc.rpm
aacc3a9db49848c990b0a2f45d768151 ppc/8.2/SRPMS/openssl-0.9.6c-2.3mdk.src.rpm

Corporate Server 1.0.1:
6a9c94a8966ff820b23680fd369cbd51 1.0.1/RPMS/openssl-0.9.5a-4.4mdk.i586.rpm
d43942ce031b3f2e407a0feeb86da5f5 1.0.1/SRPMS/openssl-0.9.5a-4.4mdk.src.rpm

Single Network Firewall 7.2:
363755252a9a9c0b2e4a9e821ebb2f65 snf7.2/RPMS/openssl-0.9.5a-9.3mdk.i586.rpm
6bfee5aae5b7fb76b8bb7d8ebfa4987c snf7.2/SRPMS/openssl-0.9.5a-9.3mdk.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]

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

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