NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via…

Description

NTP before 4.2.8p9 does not properly perform the initial sync calculations, which allows remote attackers to unspecified impact via unknown vectors, related to a "root distance that did not include the peer dispersion."

Scores

EPSS (exploitation in 30 days)

9.8% · top 4.5% of all CVEs (2 Nov 2026)

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The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.

Weakness

• n/a
• CWE-682 (opens in a new tab)

Affected products

• n/a

  • affected n/a

References (25)

• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03706en_us (opens in a new tab)x_refsource_CONFIRMx_transferred
• RHSA-2017:0252 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• http://support.ntp.org/bin/view/Main/SecurityNotice#Recent_Vulnerabilities (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://nwtime.org/ntp428p9_release/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• VU#633847 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
• http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• 1037354 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• https://bto.bluecoat.com/security-advisory/sa139 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 94455 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• FreeBSD-SA-16:39 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
• http://support.ntp.org/bin/view/Main/NtpBug3067 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• 20170310 [security bulletin] HPESBUX03706 rev.1 - HP-UX NTP service running ntpd, Multiple Vulnerabilities (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• openSUSE-SU-2016:3280 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• USN-3349-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• FEDORA-2016-e8a8561ee7 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• FEDORA-2016-7209ab4e02 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• http://www.huawei.com/en/psirt/security-advisories/huawei-sa-20171129-01-ntpd-en (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2016-c198d15316 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2017-227 (opens in a new tab)x_refsource_CONFIRMx_transferred
• 20161222 FreeBSD Security Advisory FreeBSD-SA-16:39.ntp (opens in a new tab)mailing-listx_refsource_BUGTRAQx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://us-cert.cisa.gov/ics/advisories/icsa-21-159-11 (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Record last updated 6 Aug 2024, 01:57 UTC.