Vulnerability identifier: #VU32355

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2015-8605

CWE-ID: CWE-20

Exploitation vector: Local network

Exploit availability: No

Vulnerable software:
DHCP
Server applications / Other server solutions

Vendor: ISC

Description

The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.

ISC DHCP 4.x before 4.1-ESV-R12-P1, 4.2.x, and 4.3.x before 4.3.3-P1 allows remote attackers to cause a denial of service (application crash) via an invalid length field in a UDP IPv4 packet.

Mitigation
Install update from vendor's website.

Vulnerable software versions

DHCP: 4.0 - 4.0.3, 4.1-esv - 4.1.2, 4.2.0 - 4.2.8, 4.3.0 - 4.3.6-P1, 4.4.0 - 4.4.1

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External links
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/175594.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-January/176031.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00162.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00168.html
http://www.debian.org/security/2016/dsa-3442
http://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
http://www.securityfocus.com/bid/80703
http://www.securitytracker.com/id/1034657
http://www.ubuntu.com/usn/USN-2868-1
http://blogs.sophos.com/2016/02/17/utm-up2date-9-354-released/
http://blogs.sophos.com/2016/02/29/utm-up2date-9-319-released/
http://kb.isc.org/article/AA-01334

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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 local network (LAN).

Is there known malware, which exploits this vulnerability?

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