Turbolinux Security Announcement: openssl-0.9.6a-2
May 26, 2001, 01:08 (0 Talkback[s])
Date: Fri, 25 May 2001 12:45:02 -0700 (PDT)
From: TurboLinux Security Team <security@www1.turbolinux.com>
Subject: [TL-Security-Announce] TLSA2001023 openssl-0.9.6a-2
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Turbolinux Security Announcement
Package: openssl
Vulnerable Packages: All Turbolinux versions previous to 0.9.6a-2
Date: 05/16/2001 5:00 PDT
Affected Turbolinux versions: TL Server 6.5
Turbolinux Advisory ID#: TLSA2001023
Credits: Special thanks go out to the OpenSSL team
References: http://marc.theaimsgroup.com/?l=openssl-announce&m=98655255404174&w=2
http://www.openssl.org/source/exp/CHANGES
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Several security holes has been fixed in the package openssl. Please
update the packages in your installation as soon as possible.
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1. Problem Summary
There are four security fixes that have been applied to this update of openssl:
-The behavior of OpenSSL has been modified to avoid using environment variables
when running as root.
-A checking scheme has been implemented to check the result of RSA-CRT. This
reduces the possibility of deducing the private key from an incorrectly
calculated signature.
-A prevention measure against Bleichenbacher's DSA attack is also added.
-The premaster secret is zeroed after deriving the master secret in DH ciphersuites.
2. Solution
Update the packages from our ftp server by running the following
command:
rpm -Uvh ftp_path_to_filename
Where ftp_path_to_filename is the following:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/openssl-0.9.6a-2.i386.rpm
ftp://ftp.turbolinux.com/pub/updates/6.0/security/openssl-devel-0.9.6a-2.i386.rpm
The source RPM can be downloaded here:
ftp://ftp.turbolinux.com/pub/updates/6.0/SRPMS/openssl-0.9.6a-2.src.rpm
**Note: You must rebuild and install the RPM if you choose to download
and install the SRPM. Simply installing the SRPM alone WILL NOT CLOSE
THE SECURITY HOLE.
Please verify the MD5 checksums of the updates before you install:
MD5 sum Package Name
- ---------------------------------------------------------------------------------------------
36de8b1bf2dc8999b4e7bc7bfa3f6f0e openssl-0.9.6a-2.i386.rpm
30b164a043cdb02831cc5cf587dab258 openssl-devel-0.9.6a-2.i386.rpm
292468156d460ca93bd522c66ab80099 openssl-0.9.6a-2.src.rpm
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These packages are GPG signed by Turbolinux for security. Our key
is available here:
http://www.turbolinux.com/security/tlgpgkey.asc
To verify a package, use the following command:
rpm --checksig name_of_rpm
To examine only the md5sum, use the following command:
md5sum name_of_rpm
**Note: Checking GPG keys requires RPM 3.0 or higher.
______________________________________________________________________________________________
You can find more updates on our ftp server:
ftp://ftp.turbolinux.com/pub/updates/6.0/security/
for TL6.x Workstation and Server security updates
Our webpage for security announcements:
http://www.turbolinux.com/security
If you want to report vulnerabilities, please contact:
security@turbolinux.com
______________________________________________________________________________________________
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