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=====================================================================
                   Red Hat Security Advisory

Synopsis:          Important: haproxy security update
Advisory ID:       RHSA-2015:1741-01
Product:           Red Hat Enterprise Linux
Advisory URL:      https://rhn.redhat.com/errata/RHSA-2015-1741.html
Issue date:        2015-09-08
CVE Names:         CVE-2015-3281 
=====================================================================

1. Summary:

An updated haproxy package that fixes one security issue is now available
for Red Hat Enterprise Linux 6 and 7.

Red Hat Product Security has rated this update as having Important security
impact. A Common Vulnerability Scoring System (CVSS) base score, which
gives a detailed severity rating, is available from the CVE link in the
References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux Load Balancer (v. 6) - i386, x86_64
Red Hat Enterprise Linux Server (v. 7) - x86_64
Red Hat Enterprise Linux Workstation (v. 7) - x86_64

3. Description:

HAProxy provides high availability, load balancing, and proxying for TCP
and HTTP-based applications.

An implementation error related to the memory management of request and
responses was found within HAProxy's buffer_slow_realign() function.
An unauthenticated remote attacker could possibly use this flaw to leak
certain memory buffer contents from a past request or session.
(CVE-2015-3281)

All haproxy users are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.

4. Solution:

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

For details on how to apply this update, refer to:

https://access.redhat.com/articles/11258

5. Bugs fixed (https://bugzilla.redhat.com/):

1239072 - CVE-2015-3281 haproxy: information leak in buffer_slow_realign()

6. Package List:

Red Hat Enterprise Linux Load Balancer (v. 6):

Source:
haproxy-1.5.4-2.el6_7.1.src.rpm

i386:
haproxy-1.5.4-2.el6_7.1.i686.rpm
haproxy-debuginfo-1.5.4-2.el6_7.1.i686.rpm

x86_64:
haproxy-1.5.4-2.el6_7.1.x86_64.rpm
haproxy-debuginfo-1.5.4-2.el6_7.1.x86_64.rpm

Red Hat Enterprise Linux Server (v. 7):

Source:
haproxy-1.5.4-4.el7_1.1.src.rpm

x86_64:
haproxy-1.5.4-4.el7_1.1.x86_64.rpm
haproxy-debuginfo-1.5.4-4.el7_1.1.x86_64.rpm

Red Hat Enterprise Linux Workstation (v. 7):

Source:
haproxy-1.5.4-4.el7_1.1.src.rpm

x86_64:
haproxy-1.5.4-4.el7_1.1.x86_64.rpm
haproxy-debuginfo-1.5.4-4.el7_1.1.x86_64.rpm

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

7. References:

https://access.redhat.com/security/cve/CVE-2015-3281
https://access.redhat.com/security/updates/classification/#important

8. Contact:

The Red Hat security contact is <secalert@redhat.com>. More contact
details at https://access.redhat.com/security/team/contact/

Copyright 2015 Red Hat, Inc.
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