#VU32321 Input validation error in ISC BIND - CVE-2016-1285

Vulnerability identifier: #VU32321

Vulnerability risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2016-1285

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ISC BIND
Server applications / DNS servers

Vendor: ISC

Description

The vulnerability allows a remote non-authenticated attacker to a crash the entire system.

named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 does not properly handle DNAME records when parsing fetch reply messages, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a malformed packet to the rndc (aka control channel) interface, related to alist.c and sexpr.c.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ISC BIND: 4.9.2 - 9.9.8

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2016-April/181036.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-April/181037.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-March/178831.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-March/178880.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-March/179904.html
https://lists.fedoraproject.org/pipermail/package-announce/2016-March/179911.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00046.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00053.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00070.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00072.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00075.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00079.html
https://lists.opensuse.org/opensuse-security-announce/2016-03/msg00084.html
https://lists.opensuse.org/opensuse-security-announce/2016-06/msg00013.html
https://marc.info/?l=bugtraq&m=146191105921542&w=2
https://rhn.redhat.com/errata/RHSA-2016-0562.html
https://rhn.redhat.com/errata/RHSA-2016-0601.html
https://www.debian.org/security/2016/dsa-3511
https://www.oracle.com/technetwork/topics/security/bulletinjan2016-2867206.html
https://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
https://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
https://www.securitytracker.com/id/1035236
https://www.ubuntu.com/usn/USN-2925-1
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05087821
https://kb.isc.org/article/AA-01352
https://kb.isc.org/article/AA-01380
https://kb.isc.org/article/AA-01438
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:13.bind.asc
https://security.gentoo.org/glsa/201610-07

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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.