What’s Vulnerable › Vulnerabilities

CVE-2014-9750

• Severity: medium (CVSS 5.8 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 6.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2015-10-06 · updated 2026-06-17
• Weakness: CWE-20

Description

ntp_crypto.c in ntpd in NTP 4.x before 4.2.8p1, when Autokey Authentication is enabled, allows remote attackers to obtain sensitive information from process memory or cause a denial of service (daemon crash) via a packet containing an extension field with an invalid value for the length of its value field.

Affected products

• Debian Linux: 7.0, 8.0, 9.0
• NTP: from 4.2.0 before 4.2.8; 4.2.8 — fixed in 4.2.8
• Oracle Corporation Oracle Linux: 7
• RedHat Enterprise Linux Desktop: 6.0
• RedHat Enterprise Linux Server: 6.0
• RedHat Enterprise Linux Workstation: 6.0

How to fix

Upgrade to a fixed version: NTP 4.2.8. Check the vendor advisory for mitigations.

References

• http://bugs.ntp.org/show_bug.cgi?id=2671
• http://rhn.redhat.com/errata/RHSA-2015-1459.html
• http://support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne
• http://www.debian.org/security/2015/dsa-3388
• http://www.kb.cert.org/vuls/id/852879
• http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
• http://www.securityfocus.com/bid/72583
• https://bugzilla.redhat.com/show_bug.cgi?id=1184573
• https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03886en_us
• http://bugs.ntp.org/show_bug.cgi?id=2671
• http://rhn.redhat.com/errata/RHSA-2015-1459.html
• http://support.ntp.org/bin/view/Main/SecurityNotice#December_2014_NTP_Security_Vulne

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