From: Progeny Security Team <security@progeny.com>
To: progeny-security-announce@lists.progeny.com,
progeny-debian@lists.progeny.com, bugtraq@securityfocus.com,
linuxlist@securityportal.com
Subject: PROGENY-SA-2001-23: PRNG weakness in OpenSSL
Date: Tue, 14 Aug 2001 16:20:03 -0500 (EST)
Cc: Progeny Security Team <security@progeny.com>
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PROGENY SERVICE NETWORK -- SECURITY ADVISORY PROGENY-SA-2001-23
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Synopsis: PRNG weakness in OpenSSL
Software: openssl
History:
2001-07-04 Vulnerability announced
2001-08-14 Update available in Progeny archive
Credits: Markku-Juhani O. Saarinen <markku-juhani.saarinen@nokiacom>
Affects: Progeny Debian (openssl prior to 0.9.6b-1)
Progeny Only: NO
Vendor-Status: New Version Released
(openssl_0.9.6b-1)
$Progeny: security/advisory/PROGENY-SA-2001-23,v 1.5 2001/08/14 20:03:19 dsp Exp $
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SUMMARY
The openssl package contains a flaw in the pseudo random number
generator in Progeny versions prior to 0.9.6b-1.
DETAILED DESCRIPTION
A flaw exists in the pseudo random number generator (PRNG) in
OpenSSL versions up to 0.9.6a. By knowing the output of specific PRNG
requests, an attacker would be able to determine the PRNG's internal
state and thus predict future PRNG output.
SOLUTION (See also: UPDATING VIA APT-GET)
Upgrade to a fixed version of openssl. Version 0.9.6b-1
corrects the problem. For your convenience, you may upgrade to the
openssl_0.9.6b-1 package.
UPDATING VIA APT-GET
1. Ensure that your /etc/apt/sources.list file has a URI for Progeny's
update repository:
deb http://archive.progeny.com/progeny updates/newton/
2. Update your cache of available packages for apt(8).
Example:
# apt-get update
3. Using apt(8), install the new package. apt(8) will download the
update, verify its integrity with md5, and then install the
package on your system with dpkg(8).
Example:
# apt-get install openssl
UPDATING VIA DPKG
1. Use your preferred FTP/HTTP client to retrieve the following
updated files from Progeny's update archive at:
http://archive.progeny.com/progeny/updates/newton/
MD5 Checksum Filename
-------------------------------- -------------------------------------
b4f214446ccfc2a4bffdf3045a6ecb37 openssl_0.9.6b-1_i386.deb
12dde715327db31d71c0b1db2b406c2f libssl0.9.6_0.9.6b-1_i386.deb
6f618fba60e8f6e800026d863df692e8 libssl-dev_0.9.6b-1_i386.deb
e95a5263c67c343302c5c0b404220590 ssleay_0.9.6b-1_all.deb
Example:
$ wget \
http://archive.progeny.com/progeny/updates/newton/openssl_0.9.6b-1_i386.deb
2. Use the md5sum(1) command on the retrieved files to verify that
they match the MD5 checksum provided in this advisory:
Example:
$ md5sum openssl_0.9.6b-1_i386.deb
3. Then install the replacement package(s) using dpkg(8).
Example:
# dpkg --install openssl_0.9.6b-1_i386.deb
WORKAROUND
No known workaround exists for this vulnerability.
MORE INFORMATION
More information can be obtained from
http://marc.theaimsgroup.com/?l=openssl-announce&m=99488864921296&w=2
Progeny advisories can be found at http://www.progeny.com/security/.
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pub 1024D/F92D4D1F 2001-04-04 Progeny Security Team <security@progeny.com>
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