Vulnerability Monitor

The vendors, products, and vulnerabilities you care about

CVE-2018-7183

Buffer overflow in the decodearr function in ntpq in ntp 4.2.8p6 through 4.2.8p10 allows remote attackers to execute arbitrary code by leveraging an ntpq query and sending a response with a crafted array.

Security Impact Summary

This vulnerability carries a CRITICAL severity rating with a CVSS v3.1 score of 9.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), integrity (unauthorized modifications), and availability (service disruption) for affected systems. Impacting 4 products from ntp, from freebsd, from canonical and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

First disclosed in 2018, 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

2018-03-08T20:29:00.423

Last Modified

2024-11-21T04:11:44.593

Status

Modified

Source

[email protected]

Severity

CVSSv3.0: 9.8 (CRITICAL)

CVSSv2 Vector

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

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

Exploitability Score

10.0

Impact Score

6.4

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	ntp	ntp	4.2.8	Yes
Application	ntp	ntp	4.2.8	Yes
Application	ntp	ntp	4.2.8	Yes
Application	ntp	ntp	4.2.8	Yes
Application	ntp	ntp	4.2.8	Yes
Operating System	freebsd	freebsd	10.3	Yes
Operating System	freebsd	freebsd	10.4	Yes
Operating System	freebsd	freebsd	11.1	Yes
Operating System	canonical	ubuntu_linux	12.04	Yes
Operating System	canonical	ubuntu_linux	14.04	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	17.10	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Application	netapp	element_software	-	Yes

References

http://support.ntp.org/bin/view/Main/NtpBug3414 Vendor Advisory ([email protected])
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S Vendor Advisory ([email protected])
http://www.securityfocus.com/bid/103351 Third Party Advisory, VDB Entry ([email protected])
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/201805-12 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20180626-0001/ Third Party Advisory ([email protected])
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us ([email protected])
https://usn.ubuntu.com/3707-1/ Third Party Advisory ([email protected])
https://usn.ubuntu.com/3707-2/ Third Party Advisory ([email protected])
https://www.oracle.com//security-alerts/cpujul2021.html ([email protected])
https://www.synology.com/support/security/Synology_SA_18_13 Third Party Advisory ([email protected])
http://support.ntp.org/bin/view/Main/NtpBug3414 Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://support.ntp.org/bin/view/Main/SecurityNotice#February_2018_ntp_4_2_8p11_NTP_S Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/103351 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
https://security.FreeBSD.org/advisories/FreeBSD-SA-18:02.ntp.asc Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/201805-12 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20180626-0001/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3707-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/3707-2/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com//security-alerts/cpujul2021.html (af854a3a-2127-422b-91ae-364da2661108)
https://www.synology.com/support/security/Synology_SA_18_13 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 ntp'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.