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AUSCERT External Security Bulletin Redistribution
ESB-2015.2357
Important: haproxy security update
9 September 2015
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AusCERT Security Bulletin Summary
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Product: haproxy
Publisher: Red Hat
Operating System: Red Hat Enterprise Linux Server 7
Red Hat Enterprise Linux WS/Desktop 7
Impact/Access: Access Confidential Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-3281
Reference: ESB-2015.1769
Original Bulletin:
https://rhn.redhat.com/errata/RHSA-2015-1741.html
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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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