Vulnerability identifier: #VU32279

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-5360

CWE-ID: CWE-119

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 a denial of service (DoS) attack.

HAproxy 1.6.x before 1.6.6, when a deny comes from a reqdeny rule, allows remote attackers to cause a denial of service (uninitialized memory access and crash) or possibly have unspecified other impact via unknown vectors.

Mitigation
Install update from vendor's website.

Vulnerable software versions

HAProxy: 1.6.0 - 1.6.5

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External links
http://git.haproxy.org/?p=haproxy-1.6.git;a=commit;h=60f01f8c89e4fb2723d5a9f2046286e699567e0b
http://www.openwall.com/lists/oss-security/2016/06/09/5
http://www.openwall.com/lists/oss-security/2016/06/09/6
http://www.ubuntu.com/usn/USN-3011-1

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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.