Vulnerability identifier: #VU41249

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2014-6269

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
HAProxy
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: HAProxy

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

Multiple integer overflows in the http_request_forward_body function in proto_http.c in HAProxy 1.5-dev23 before 1.5.4 allow remote attackers to cause a denial of service (crash) via a large stream of data, which triggers a buffer overflow and an out-of-bounds read.

Mitigation
Install update from vendor's website.

Vulnerable software versions

HAProxy: 1.5 - 1.5.3

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External links
http://article.gmane.org/gmane.comp.web.haproxy/17726
http://article.gmane.org/gmane.comp.web.haproxy/18097
http://git.haproxy.org/?p=haproxy-1.5.git;a=commitdiff;h=b4d05093bc89f71377230228007e69a1434c1a0c
http://rhn.redhat.com/errata/RHSA-2014-1292.html
http://secunia.com/advisories/59936
http://secunia.com/advisories/61507
http://www.openwall.com/lists/oss-security/2014/09/09/23

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.