Buffer overflow in HAProxy 1.4 through 1.4.22 and 1.5-dev through 1.5-dev17, when HTTP keep-alive is enabled, using HTTP keywords in TCP inspection rules, and running with rewrite rules that appends to requests, allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via crafted pipelined HTTP requests that prevent request realignment from occurring.

An updated haproxy package that fixes one security issue is now available for Red Hat OpenShift Enterprise 1.1.3.

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.

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

A buffer overflow flaw was found in the way HAProxy handled pipelined HTTP requests. A remote attacker could send pipelined HTTP requests that would cause HAProxy to crash or, potentially, execute arbitrary code with the privileges of the user running HAProxy. This issue only affected systems using all of the following combined configuration options: HTTP keep alive enabled, HTTP keywords in TCP inspection rules, and request appending rules. (CVE-2013-1912)

In Red Hat OpenShift Enterprise, the HAProxy cartridge is added to your application when you select to have your application scaled. Due to the way this cartridge is currently used in Red Hat OpenShift Enterprise, the CVE-2013-1912 issue is not exploitable.

Red Hat would like to thank Willy Tarreau of HAProxy upstream for reporting this issue. Upstream acknowledges Yves Lafon from the W3C as the original reporter.

Users of Red Hat OpenShift Enterprise 1.1.3 are advised to upgrade to this updated package, which contains a backported patch to correct this issue.

The remote host is affected by the vulnerability described in GLSA-201307-01 (HAProxy: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in HAProxy. Please review       the CVE identifiers referenced below for details.
  Impact :

    A remote attacker could send a specially crafted request, possibly       resulting in execution of arbitrary code with the privileges of the       application or a Denial of Service condition.
  Workaround :

    There is no known workaround at this time.

Based on the version obtained for HAProxy, the remote host is running load balancing software that is potentially affected by a buffer overflow vulnerability in the 'tcp-request content' inspection mechanism.  A remote attacker could exploit this issue with a specially crafted request, potentially resulting in a denial of service and possible arbitrary code execution on the remote host.

Multiple security issues have been found in HAProxy, a load-balancing reverse proxy :

  - CVE-2012-2942     Buffer overflow in the header capture code.

  - CVE-2013-1912     Buffer overflow in the HTTP keepalive code.

  - CVE-2013-2175     Denial of service in parsing HTTP headers.

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.

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

A buffer overflow flaw was found in the way HAProxy handled pipelined HTTP requests. A remote attacker could send pipelined HTTP requests that would cause HAProxy to crash or, potentially, execute arbitrary code with the privileges of the user running HAProxy. This issue only affected systems using all of the following combined configuration options: HTTP keep alive enabled, HTTP keywords in TCP inspection rules, and request appending rules. (CVE-2013-1912)

Red Hat would like to thank Willy Tarreau of HAProxy upstream for reporting this issue. Upstream acknowledges Yves Lafon from the W3C 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.

A buffer overflow flaw was found in the way HAProxy handled pipelined HTTP requests. A remote attacker could send pipelined HTTP requests that would cause HAProxy to crash or, potentially, execute arbitrary code with the privileges of the user running HAProxy. This issue only affected systems using all of the following combined configuration options: HTTP keep alive enabled, HTTP keywords in TCP inspection rules, and request appending rules. (CVE-2013-1912)

Rebuild to use PIE flags. Update to upstream stable release 1.4.23.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Update to upstream stable release 1.4.23.

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

It was discovered that HAProxy incorrectly handled configurations where global.tune.bufsize was set to a value higher than the default.
A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2012-2942)

Yves Lafon discovered that HAProxy incorrectly handled HTTP keywords in TCP inspection rules when HTTP keep-alive is enabled. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2013-1912).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

ID	Name	Product	Family	Severity
119439	RHEL 6 : haproxy (RHSA-2013:0729)	Nessus	Red Hat Local Security Checks	medium
67252	GLSA-201307-01 : HAProxy: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	medium
6906	HAProxy 'tcp-request content' Buffer Overflow Vulnerability	Nessus Network Monitor	Web Servers	medium
66936	Debian DSA-2711-1 : haproxy - several vulnerabilities	Nessus	Debian Local Security Checks	medium
66673	CentOS 6 : haproxy (CESA-2013:0868)	Nessus	CentOS Local Security Checks	medium
66663	Scientific Linux Security Update : haproxy on SL6.x i386/x86_64 (20130528)	Nessus	Scientific Linux Local Security Checks	medium
66659	RHEL 6 : haproxy (RHSA-2013:0868)	Nessus	Red Hat Local Security Checks	medium
66245	Fedora 19 : haproxy-1.4.23-2.fc19 (2013-6253)	Nessus	Fedora Local Security Checks	medium
66242	Fedora 17 : haproxy-1.4.23-1.fc17 (2013-4827)	Nessus	Fedora Local Security Checks	medium
66241	Fedora 18 : haproxy-1.4.23-1.fc18 (2013-4807)	Nessus	Fedora Local Security Checks	medium
65980	Ubuntu 11.10 / 12.04 LTS / 12.10 : haproxy vulnerabilities (USN-1800-1)	Nessus	Ubuntu Local Security Checks	medium

Detections

Analytics

CVE-2013-1912

critical

Tenable Plugins

medium

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medium