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SciLinux OpenSSL Updates: CVE-2008-7270 Moderate Ciphersuite Flaw

Calendar Dec 13, 2010 • User Avatar LinuxSecurity Advisories
2 - 3 min read
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Topics Covered

security advisory moderate security update openssl scientific linux ciphersuite flaw
Moderate: openssl security update 
Date: Mon, 13 Dec 2010 14:46:22 -0600
Reply-To: Troy Dawson 
Sender: Security Errata for Scientific Linux
 
From: Troy Dawson 
Subject: Security ERRATA Moderate: openssl on SL4.x, SL5.x i386/x86_64
Comments: To: "This email address is being protected from spambots. You need JavaScript enabled to view it."
 

Synopsis:	Moderate: openssl security update
Issue date:	2010-12-13
CVE Names:	CVE-2008-7270 CVE-2009-3245 CVE-2010-4180

A ciphersuite downgrade flaw was found in the OpenSSL SSL/TLS server
code. A remote attacker could possibly use this flaw to change the
ciphersuite associated with a cached session stored on the server, if
the server enabled the SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option,
possibly forcing the client to use a weaker ciphersuite after resuming
the session. (CVE-2010-4180, CVE-2008-7270)

Note: With this update, setting the
SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG option has no effect and this
bug workaround can no longer be enabled.

It was discovered that OpenSSL did not always check the return value of
the bn_wexpand() function. An attacker able to trigger a memory
allocation failure in that function could possibly crash an application
using the OpenSSL library and its UBSEC hardware engine support.
(CVE-2009-3245 - SL4 Only)

For the update to take effect, all services linked to the OpenSSL
library must be restarted, or the system rebooted.

SL 4.x

 SRPMS:
openssl-0.9.7a-43.17.el4_8.6.src.rpm
 i386:
openssl-0.9.7a-43.17.el4_8.6.i386.rpm
openssl-0.9.7a-43.17.el4_8.6.i686.rpm
openssl-devel-0.9.7a-43.17.el4_8.6.i386.rpm
openssl-perl-0.9.7a-43.17.el4_8.6.i386.rpm
 x86_64:
openssl-0.9.7a-43.17.el4_8.6.i686.rpm
openssl-0.9.7a-43.17.el4_8.6.x86_64.rpm
openssl-devel-0.9.7a-43.17.el4_8.6.i386.rpm
openssl-devel-0.9.7a-43.17.el4_8.6.x86_64.rpm
openssl-perl-0.9.7a-43.17.el4_8.6.x86_64.rpm

SL 5.x

 SRPMS:
openssl-0.9.8e-12.el5_5.7.src.rpm
 i386:
openssl-0.9.8e-12.el5_5.7.i386.rpm
openssl-0.9.8e-12.el5_5.7.i686.rpm
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm
openssl-perl-0.9.8e-12.el5_5.7.i386.rpm
 x86_64:
openssl-0.9.8e-12.el5_5.7.i686.rpm
openssl-0.9.8e-12.el5_5.7.x86_64.rpm
openssl-devel-0.9.8e-12.el5_5.7.i386.rpm
openssl-devel-0.9.8e-12.el5_5.7.x86_64.rpm
openssl-perl-0.9.8e-12.el5_5.7.x86_64.rpm

-Connie Sieh
-Troy Dawson