Vulnerability Monitor

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CVE-2016-2775

ISC BIND 9.x before 9.9.9-P2, 9.10.x before 9.10.4-P2, and 9.11.x before 9.11.0b2, when lwresd or the named lwres option is enabled, allows remote attackers to cause a denial of service (daemon crash) via a long request that uses the lightweight resolver protocol.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.9, indicating it can be exploited remotely over the network but requires specific conditions to be met without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 9 products from hp, from isc, from fedoraproject and 6 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2016, this vulnerability was reported during a period defined by widespread IoT adoption challenges, mobile security concerns, and the emergence of advanced persistent threat (APT) techniques. Contemporary mitigation strategies focused on secure development practices and third-party component vetting.

Published

2016-07-19T22:59:00.147

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.1: 5.9 (MEDIUM)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	hp	hp-ux	b.11.31	Yes
Application	isc	bind	≤ 9.9.8	Yes
Application	isc	bind	≤ 9.10.3	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.9.9	Yes
Application	isc	bind	9.10.4	Yes
Application	isc	bind	9.10.4	Yes
Application	isc	bind	9.10.4	Yes
Application	isc	bind	9.10.4	Yes
Application	isc	bind	9.10.4	Yes
Application	isc	bind	9.11.0	Yes
Application	isc	bind	9.11.0	Yes
Application	isc	bind	9.11.0	Yes
Application	isc	bind	9.11.0	Yes
Application	isc	bind	9.11.0	Yes
Operating System	fedoraproject	fedora	23	Yes
Operating System	fedoraproject	fedora	24	Yes
Operating System	redhat	enterprise_linux_desktop	6.0	Yes
Operating System	redhat	enterprise_linux_desktop	7.0	Yes
Operating System	redhat	enterprise_linux_eus	7.2	Yes
Operating System	redhat	enterprise_linux_eus	7.3	Yes
Operating System	redhat	enterprise_linux_eus	7.4	Yes
Operating System	redhat	enterprise_linux_eus	7.5	Yes
Operating System	redhat	enterprise_linux_eus	7.6	Yes
Operating System	redhat	enterprise_linux_eus	7.7	Yes
Operating System	redhat	enterprise_linux_server	6.0	Yes
Operating System	redhat	enterprise_linux_server	7.0	Yes
Operating System	redhat	enterprise_linux_server_aus	7.2	Yes
Operating System	redhat	enterprise_linux_server_aus	7.3	Yes
Operating System	redhat	enterprise_linux_server_aus	7.6	Yes
Operating System	redhat	enterprise_linux_server_aus	7.7	Yes
Operating System	redhat	enterprise_linux_server_tus	7.2	Yes
Operating System	redhat	enterprise_linux_server_tus	7.3	Yes
Operating System	redhat	enterprise_linux_server_tus	7.6	Yes
Operating System	redhat	enterprise_linux_server_tus	7.7	Yes
Operating System	redhat	enterprise_linux_workstation	6.0	Yes
Operating System	redhat	enterprise_linux_workstation	7.0	Yes

References

http://www.securityfocus.com/bid/92037 Third Party Advisory, VDB Entry ([email protected])
http://www.securitytracker.com/id/1036360 Third Party Advisory, VDB Entry ([email protected])
https://access.redhat.com/errata/RHBA-2017:0651 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHBA-2017:1767 Third Party Advisory ([email protected])
https://access.redhat.com/errata/RHSA-2017:2533 Third Party Advisory ([email protected])
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05321107 Patch, Vendor Advisory ([email protected])
https://kb.isc.org/article/AA-01393/74/CVE-2016-2775 Patch, Vendor Advisory ([email protected])
https://kb.isc.org/article/AA-01435 Broken Link ([email protected])
https://kb.isc.org/article/AA-01436 Broken Link ([email protected])
https://kb.isc.org/article/AA-01438 Broken Link ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7T2WJP5ELO4ZRSBXSETIZ3GAO6KOEFTA/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZUCSMEOZIZ2R2SKA4FPLTOVZHJBAOWC/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ5STNEUHBNEPUHJT7CYEVSMATFYMIX7/ ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT754KDUJTKOASJODJX7FKHCOQ6EC7UX/ ([email protected])
https://security.gentoo.org/glsa/201610-07 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20160722-0002/ Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/92037 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.securitytracker.com/id/1036360 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHBA-2017:0651 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHBA-2017:1767 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://access.redhat.com/errata/RHSA-2017:2533 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05321107 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kb.isc.org/article/AA-01393/74/CVE-2016-2775 Patch, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://kb.isc.org/article/AA-01435 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://kb.isc.org/article/AA-01436 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://kb.isc.org/article/AA-01438 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7T2WJP5ELO4ZRSBXSETIZ3GAO6KOEFTA/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MZUCSMEOZIZ2R2SKA4FPLTOVZHJBAOWC/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJ5STNEUHBNEPUHJT7CYEVSMATFYMIX7/ (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TT754KDUJTKOASJODJX7FKHCOQ6EC7UX/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201610-07 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20160722-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For hp's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.