Red Hat: 2013:1120-01: haproxy: Moderate Advisory
Summary
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 the
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
https://access.redhat.com/support/offerings/techpreview/
All users of haproxy are advised to upgrade to this updated package, which
contains a backported patch to correct this issue.
Summary
Solution
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
https://access.redhat.com/site/articles/11258
References
https://www.redhat.com/security/data/cve/CVE-2013-2175.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/support/offerings/techpreview/
Package List
Red Hat Enterprise Linux Load Balancer (v. 6):
Source:
i386:
haproxy-1.4.22-5.el6_4.i686.rpm
haproxy-debuginfo-1.4.22-5.el6_4.i686.rpm
x86_64:
haproxy-1.4.22-5.el6_4.x86_64.rpm
haproxy-debuginfo-1.4.22-5.el6_4.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/#package
Topic
An updated haproxy package that fixes one security issue is now availablefor Red Hat Enterprise Linux 6.The Red Hat Security Response Team has rated this update as having moderatesecurity impact. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available from the CVE link inthe References section.
Topic
Relevant Releases Architectures
Red Hat Enterprise Linux Load Balancer (v. 6) - i386, x86_64
Bugs Fixed
974259 - CVE-2013-2175 haproxy: http_get_hdr()/get_ip_from_hdr2() MAX_HDR_HISTORY handling denial of service