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Vulnerability record · CVE-2017-6458 · published 27 March 2017

CVE-2017-6458: Ntp memory buffer overflow vulnerability

Ntp · Ntp

Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.

8.8 CVSS 3.1 High EPSS 6.5% · top 6.5% CWE-119 · Memory buffer overflow
8.8CVSS 3.1 base score, v2 6.5
6.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
4Affected product versions listed by NVD
40References
17 Jun 2026Last modified by NVD

Description

Multiple buffer overflows in the ctl_put* functions in NTP before 4.2.8p10 and 4.3.x before 4.3.94 allow remote authenticated users to have unspecified impact via a long variable.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

4 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
http://seclists.org/fulldisclosure/2017/Nov/7
http://seclists.org/fulldisclosure/2017/Sep/62
http://support.ntp.org/bin/view/Main/NtpBug3379 PatchVendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu Vendor Advisory
http://www.securityfocus.com/archive/1/archive/1/540464/100/0/threaded
http://www.securityfocus.com/bid/97051 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038123 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-3349-1
https://bto.bluecoat.com/security-advisory/sa147
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4B7BMVXV53EE7XYW2KAVETD
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KVLFA3J43QFIP4I7HE7KQ5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZUPPICJXWL3AWQB7I3AWUC7
https://support.apple.com/HT208144 Third Party Advisory
https://support.apple.com/kb/HT208144
https://support.f5.com/csp/article/K99254031
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-294/
http://packetstormsecurity.com/files/142284/Slackware-Security-Advisory-ntp-Updates.html
http://seclists.org/fulldisclosure/2017/Nov/7
http://seclists.org/fulldisclosure/2017/Sep/62
http://support.ntp.org/bin/view/Main/NtpBug3379 PatchVendor Advisory
http://support.ntp.org/bin/view/Main/SecurityNotice#March_2017_ntp_4_2_8p10_NTP_Secu Vendor Advisory
http://www.securityfocus.com/archive/1/archive/1/540464/100/0/threaded
http://www.securityfocus.com/bid/97051 Third Party AdvisoryVDB Entry
http://www.securitytracker.com/id/1038123 Third Party AdvisoryVDB Entry
http://www.ubuntu.com/usn/USN-3349-1
https://bto.bluecoat.com/security-advisory/sa147
https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4B7BMVXV53EE7XYW2KAVETD
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7KVLFA3J43QFIP4I7HE7KQ5
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZUPPICJXWL3AWQB7I3AWUC7
https://support.apple.com/HT208144 Third Party Advisory
https://support.apple.com/kb/HT208144
https://support.f5.com/csp/article/K99254031
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03962en_us Third Party Advisory
https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11
https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-294/

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Source: NIST National Vulnerability Database (record CVE-2017-6458), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.