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Red Hat: RHSA-2015:1741-01 Critical: Haproxy Memory Leak Risk

red hat
Calendar Grey September 8, 2015
Dist Redhat Esm H88
This critical notification highlights a vulnerability in haproxy within the Red Hat Enterprise Linux ecosystem. Information on how to upgrade is included.
An updated haproxy package that fixes one security issue is now available for Red Hat Enterprise Linux 6 and 7

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

Summary

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.

Topics%20covered

Topics Covered

security advisory security issue red hat critical memory leak load balancer haproxy

References

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

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/


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2015:1741-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2015:1741.html
Issue date: 2015-09-08

Topic

An updated haproxy package that fixes one security issue is now availablefor Red Hat Enterprise Linux 6 and 7.Red Hat Product Security has rated this update as having Important securityimpact. A Common Vulnerability Scoring System (CVSS) base score, whichgives a detailed severity rating, is available from the CVE link in theReferences section.

Topics%20covered

Topics Covered

security advisory security issue red hat critical memory leak load balancer haproxy

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

Bugs Fixed

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

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