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Vulnerability Assessment

Impact

CVSS score of 6.8 (MEDIUM). Attack characteristics: network attack vector, high complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 68.97%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.
This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
No patch listed yet 69.0% exploitation probability (EPSS)

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AnalysisAI

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. Rated medium severity (CVSS 6.8), this vulnerability is remotely exploitable, no authentication required. Epss exploitation probability 69.0% and no vendor patch available.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

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. Affected products include: Isc Bind, Suse Linux Enterprise Debuginfo, Suse Manager, Suse Manager Proxy, Suse Openstack Cloud. Version information: before 9.9.8.

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Severity by source

NVD PRIMARY 6.8 MEDIUM
AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:N/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
None
Availability
High

DescriptionCVE.org

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.

Threat Intelligence Overview

EPSS Score
69.0%
Top 1% exploitable
Data Quality
3 sources
Confidence: Low
NVD CVE.org EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 69.0%
Patch available No
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

103
Low Medium High Critical
KEV: 0
EPSS: +69
CVSS: +34
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service MEDIUM

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.9.8:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.9.8:p2:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.9.8:p3:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.9.8:rc1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:-:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:beta1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:p1:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:p2:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:p3:*:*:*:*:*:*
cpe:2.3:a:isc:bind:9.10.3:rc1:*:*:*:*:*:*
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp2:*:*:*:*:*:*
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp3:*:*:*:*:*:*
cpe:2.3:a:suse:linux_enterprise_debuginfo:11:sp4:*:*:*:*:*:*
cpe:2.3:a:suse:manager:2.1:*:*:*:*:*:*:*
cpe:2.3:a:suse:manager_proxy:2.1:*:*:*:*:*:*:*
cpe:2.3:a:suse:openstack_cloud:5:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:leap:42.1:*:*:*:*:*:*:*
cpe:2.3:o:opensuse:opensuse:11.4:*:*:*:*:*:*:*
+ 175 more

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named in ISC BIND 9.x before 9.9.9-P5, 9.10.x before 9.10.4-P5, and 9.11.x before 9.11.0-P2 allows remote attackers to c
CVE-2013-4854 HIGH POC
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The RFC 5011 implementation in rdata.c in ISC BIND 9.7.x and 9.8.x before 9.8.5-P2, 9.8.6b1, 9.9.x before 9.9.3-P2, and

CVE-2015-5722 HIGH
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buffer.c in named in ISC BIND 9.x before 9.9.7-P3 and 9.10.x before 9.10.2-P4 allows remote attackers to cause a denial

CVE-2012-4244 HIGH
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named in ISC BIND 9.x before 9.9.8-P4 and 9.10.x before 9.10.3-P4 allows remote attackers to cause a denial of service (
CVE-2012-1667 HIGH
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CVE-2016-9147 HIGH
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named in ISC BIND 9.9.9-P4, 9.9.9-S6, 9.10.4-P4, and 9.11.0-P1 allows remote attackers to cause a denial of service (ass
CVE-2015-8000 MEDIUM
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db.c in named in ISC BIND 9.x before 9.9.8-P2 and 9.10.x before 9.10.3-P2 allows remote attackers to cause a denial of s
CVE-2016-2848 HIGH
7.5 Oct 21

ISC BIND 9.1.0 through 9.8.4-P2 and 9.9.0 through 9.9.2-P2 allows remote attackers to cause a denial of service (asserti
CVE-2016-9444 HIGH
7.5 Jan 12

named in ISC BIND 9.x before 9.9.9-P5, 9.10.x before 9.10.4-P5, and 9.11.x before 9.11.0-P2 allows remote attackers to c

Same technique Denial Of Service

View all
CVE-2015-5119 CRITICAL POC
9.8
CVE-2011-2462 CRITICAL POC
9.8
CVE-2011-0611 HIGH POC
8.8
CVE-2012-1889 HIGH POC
8.8
CVE-2012-0507 CRITICAL POC
9.8
CVE-2014-1761 HIGH POC
7.8
CVE-2015-5122 CRITICAL POC
9.8
CVE-2011-0609 HIGH POC
7.8

References

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

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