Sicherheit: Denial of Service in HAproxy
||Denial of Service in HAproxy
||Red Hat Enterprise Linux
||Mi, 31. Juli 2013, 08:13
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Red Hat Security Advisory
Synopsis: Moderate: haproxy security update
Advisory ID: RHSA-2013:1120-01
Product: Red Hat Enterprise Linux
Advisory URL: https://rhn.redhat.com/errata/RHSA-2013-1120.html
Issue date: 2013-07-30
CVE Names: CVE-2013-2175
An updated haproxy package that fixes one security issue is now available
for Red Hat Enterprise Linux 6.
The Red Hat Security Response Team has rated this update as having moderate
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
HAProxy provides high availability, load balancing, and proxying for TCP
and HTTP-based applications.
A flaw was found in the way HAProxy handled requests when the proxy's
configuration ("/etc/haproxy/haproxy.cfg") had certain rules that use
hdr_ip criterion. A remote attacker could use this flaw to crash HAProxy
instances that use the affected configuration. (CVE-2013-2175)
Red Hat would like to thank HAProxy upstream for reporting this issue.
Upstream acknowledges David Torgerson as the original reporter.
HAProxy is released as a Technology Preview in Red Hat Enterprise Linux 6.
More information about Red Hat Technology Previews is available at
All users of haproxy are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.
Before applying this update, make sure all previously released errata
relevant to your system have been applied.
This update is available via the Red Hat Network. Details on how to
use the Red Hat Network to apply this update are available at
5. Bugs fixed (http://bugzilla.redhat.com/):
974259 - CVE-2013-2175 haproxy: http_get_hdr()/get_ip_from_hdr2()
MAX_HDR_HISTORY handling denial of service
6. Package List:
Red Hat Enterprise Linux Load Balancer (v. 6):
These packages are GPG signed by Red Hat for security. Our key and
details on how to verify the signature are available from
The Red Hat security contact is <email@example.com>. More contact
details at https://access.redhat.com/security/team/contact/
Copyright 2013 Red Hat, Inc.
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