CVE-2016-2776

ISC BIND 9 - Denial of Service

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

buffer.c in named in ISC BIND 9 before 9.9.9-P3, 9.10.x before 9.10.4-P3, and 9.11.x before 9.11.0rc3 does not properly construct responses, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a crafted query.

buffer.c en named en ISC BIND 9 en versiones anteriores a 9.9.9-P3, 9.10.x en versiones anteriores a 9.10.4-P3 y 9.11.x en versiones anteriores a 9.11.0rc3 no construye respuestas adecuadamente, lo que permite a atacantes remotos provocar una denegación de servicio (fallo de aserción y salida de demonio) a través de una consulta manipulada.

A denial of service flaw was found in the way BIND constructed a response to a query that met certain criteria. A remote attacker could use this flaw to make named exit unexpectedly with an assertion failure via a specially crafted DNS request packet.

A defect in the rendering of messages into packets can cause named to exit with an assertion failure in buffer.c while constructing a response to a query that meets certain criteria. This assertion can be triggered even if the apparent source address isnt allowed to make queries.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Complete

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2016-02-26 CVE Reserved
2016-09-28 CVE Published
2016-10-03 First Exploit
2024-08-05 CVE Updated
2024-10-28 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation
CWE-617: Reachable Assertion

CAPEC

References (21)

URL	Tag	Source
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html	Third Party Advisory
http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html	Third Party Advisory
http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html	Third Party Advisory
http://www.securityfocus.com/bid/93188	Vdb Entry
http://www.securitytracker.com/id/1036903	Vdb Entry
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05321107	Third Party Advisory
https://kb.isc.org/article/AA-01435	X_refsource_confirm
https://kb.isc.org/article/AA-01436	X_refsource_confirm
https://kb.isc.org/article/AA-01438	X_refsource_confirm
https://security.netapp.com/advisory/ntap-20160930-0001	X_refsource_confirm
http://blog.infobytesec.com/2016/10/a-tale-of-dns-packet-cve-2016-2776.html

URL	Date	SRC
https://www.exploit-db.com/exploits/40453	2024-08-05
https://github.com/infobyte/CVE-2016-2776	2016-10-03

URL	Date	SRC

URL	Date	SRC
http://rhn.redhat.com/errata/RHSA-2016-1944.html	2019-12-27
http://rhn.redhat.com/errata/RHSA-2016-1945.html	2019-12-27
http://rhn.redhat.com/errata/RHSA-2016-2099.html	2019-12-27
https://kb.isc.org/article/AA-01419/0	2019-12-27
https://security.FreeBSD.org/advisories/FreeBSD-SA-16:28.bind.asc	2019-12-27
https://security.gentoo.org/glsa/201610-07	2019-12-27
https://access.redhat.com/security/cve/CVE-2016-2776	2016-10-25
https://bugzilla.redhat.com/show_bug.cgi?id=1378380	2016-10-25

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				5.0 Search vendor "Oracle" for product "Linux" and version "5.0"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				6 Search vendor "Oracle" for product "Linux" and version "6"		-		Affected
Oracle Search vendor "Oracle"		Linux Search vendor "Oracle" for product "Linux"				7 Search vendor "Oracle" for product "Linux" and version "7"		-		Affected
Oracle Search vendor "Oracle"		Vm Server Search vendor "Oracle" for product "Vm Server"				3.2 Search vendor "Oracle" for product "Vm Server" and version "3.2"		-		Affected
Oracle Search vendor "Oracle"		Vm Server Search vendor "Oracle" for product "Vm Server"				3.3 Search vendor "Oracle" for product "Vm Server" and version "3.3"		-		Affected
Oracle Search vendor "Oracle"		Vm Server Search vendor "Oracle" for product "Vm Server"				3.4 Search vendor "Oracle" for product "Vm Server" and version "3.4"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				<= 9.9.9 Search vendor "Isc" for product "Bind" and version " <= 9.9.9"		p3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		a1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		a2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		b1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		b2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		p1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		p2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		rc1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.0 Search vendor "Isc" for product "Bind" and version "9.10.0"		rc2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		b1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		b2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		p1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		p2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		rc1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.1 Search vendor "Isc" for product "Bind" and version "9.10.1"		rc2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		b1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		p1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		p2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		p3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		p4		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		rc1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.2 Search vendor "Isc" for product "Bind" and version "9.10.2"		rc2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		-		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		b1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		p1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		p2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		p3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		p4		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.3 Search vendor "Isc" for product "Bind" and version "9.10.3"		rc1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.4 Search vendor "Isc" for product "Bind" and version "9.10.4"		p2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.10.4 Search vendor "Isc" for product "Bind" and version "9.10.4"		p3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		a1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		a2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		a3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		b1		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		b2		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		b3		Affected
Isc Search vendor "Isc"		Bind Search vendor "Isc" for product "Bind"				9.11.0 Search vendor "Isc" for product "Bind" and version "9.11.0"		rc1		Affected
Hp Search vendor "Hp"		Hp-ux Search vendor "Hp" for product "Hp-ux"				11.31 Search vendor "Hp" for product "Hp-ux" and version "11.31"		-		Affected
Oracle Search vendor "Oracle"		Solaris Search vendor "Oracle" for product "Solaris"				10.0 Search vendor "Oracle" for product "Solaris" and version "10.0"		-		Affected
Oracle Search vendor "Oracle"		Solaris Search vendor "Oracle" for product "Solaris"				11.3 Search vendor "Oracle" for product "Solaris" and version "11.3"		-		Affected