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Security Advisory Important: openssl security update

Advisory: RHSA-2012:1307-1
Type: Security Advisory
Severity: Important
Issued on: 2012-09-24
Last updated on: 2012-09-24
Affected Products:
CVEs (cve.mitre.org): CVE-2011-4108
CVE-2011-4109
CVE-2011-4576
CVE-2011-4619
CVE-2012-0884
CVE-2012-1165
CVE-2012-2110
CVE-2012-2333

Details

An update for the OpenSSL component for JBoss Enterprise Application
Platform 5.1.2 for Solaris and Microsoft Windows that fixes multiple
security issues is now available from the Red Hat Customer Portal.

The Red Hat Security Response Team has rated this update as having
important security impact. Common Vulnerability Scoring System (CVSS) base
scores, which give detailed severity ratings, are available for each
vulnerability from the CVE links in the References section.

OpenSSL is a toolkit that implements the Secure Sockets Layer (SSL v2/v3)
and Transport Layer Security (TLS v1) protocols, as well as a
full-strength, general purpose cryptography library.

Multiple numeric conversion errors, leading to a buffer overflow, were
found in the way OpenSSL parsed ASN.1 (Abstract Syntax Notation One) data
from BIO (OpenSSL's I/O abstraction) inputs. Specially-crafted DER
(Distinguished Encoding Rules) encoded data read from a file or other BIO
input could cause an application using the OpenSSL library to crash or,
potentially, execute arbitrary code. (CVE-2012-2110)

A double free flaw was discovered in the policy checking code in OpenSSL.
A remote attacker could use this flaw to crash an application that uses
OpenSSL by providing an X.509 certificate that has specially-crafted
policy extension data. (CVE-2011-4109)

An information leak flaw was found in the SSL 3.0 protocol implementation
in OpenSSL. Incorrect initialization of SSL record padding bytes could
cause an SSL client or server to send a limited amount of possibly
sensitive data to its SSL peer via the encrypted connection.
(CVE-2011-4576)

It was discovered that OpenSSL did not limit the number of TLS/SSL
handshake restarts required to support Server Gated Cryptography. A remote
attacker could use this flaw to make a TLS/SSL server using OpenSSL consume
an excessive amount of CPU by continuously restarting the handshake.
(CVE-2011-4619)

This update also fixes additional security issues in OpenSSL that are not
exposed in JBoss Enterprise Application Platform: CVE-2011-4108,
CVE-2012-0884, CVE-2012-1165, and CVE-2012-2333.

Warning: Before applying this update, back up your JBoss Enterprise
Application Platform's "server/[PROFILE]/deploy/" directory, along with all
other customized configuration files.

All users of JBoss Enterprise Application Platform 5.1.2 for Solaris and
Microsoft Windows as provided from the Red Hat Customer Portal are advised
to apply this update.


Solution

The References section of this erratum contains a download link (you must
log in to download the update). Before applying the update, back up your
existing JBoss Enterprise Application Platform installation (including all
applications and configuration files).

JBoss server instances configured to use the Tomcat Native library must be
restarted for this update to take effect.

Updated packages


Bugs fixed (see bugzilla for more information)

771770 - CVE-2011-4108 openssl: DTLS plaintext recovery attack
771771 - CVE-2011-4109 openssl: double-free in policy checks
771775 - CVE-2011-4576 openssl: uninitialized SSL 3.0 padding
771780 - CVE-2011-4619 openssl: SGC restart DoS attack
802489 - CVE-2012-1165 openssl: mime_param_cmp NULL dereference crash
802725 - CVE-2012-0884 openssl: CMS and PKCS#7 Bleichenbacher attack
814185 - CVE-2012-2110 openssl: asn1_d2i_read_bio integer errors leading to buffer overflow
820686 - CVE-2012-2333 openssl: record length handling integer underflow


References



These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from:
https://www.redhat.com/security/team/key/#package

The Red Hat security contact is secalert@redhat.com. More contact details at http://www.redhat.com/security/team/contact/