NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin…

Description

NTP before 4.2.8p6 and 4.3.x before 4.3.90 allows remote attackers to bypass the origin timestamp validation via a packet with an origin timestamp set to zero.

Scores

EPSS (exploitation in 30 days)

6.3% · top 6.4% of all CVEs (4 Nov 2026)

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

Weakness

• n/a
• CWE-20 (opens in a new tab)All about CWE-20 and its CVEs

Affected products

• n/a

  • affected n/a

References (32)

• 20160120 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products - January 2016 (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• USN-3096-1 (opens in a new tab)vendor-advisoryx_refsource_UBUNTUx_transferred
• SUSE-SU-2016:1177 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• DSA-3629 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SU-2016:1912 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 1034782 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
• openSUSE-SU-2016:1292 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• VU#718152 (opens in a new tab)third-party-advisoryx_refsource_CERT-VNx_transferred
• SUSE-SU-2016:1247 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• RHSA-2016:0063 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
• https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2016-8bb1932088 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://security.netapp.com/advisory/ntap-20171004-0002/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://security.netapp.com/advisory/ntap-20171031-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
• SUSE-SU-2016:1311 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 20160428 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: April 2016 (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• 20161123 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products: November 2016 (opens in a new tab)vendor-advisoryx_refsource_CISCOx_transferred
• http://support.ntp.org/bin/view/Main/SecurityNotice#April_2016_NTP_4_2_8p7_Security (opens in a new tab)x_refsource_CONFIRMx_transferred
• FEDORA-2016-34bc10a2c8 (opens in a new tab)vendor-advisoryx_refsource_FEDORAx_transferred
• SUSE-SU-2016:2094 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• SUSE-SU-2016:1175 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• 81811 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
• FreeBSD-SA-16:09 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_transferred
• https://bto.bluecoat.com/security-advisory/sa113 (opens in a new tab)x_refsource_CONFIRMx_transferred
• openSUSE-SU-2016:1423 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
• GLSA-201607-15 (opens in a new tab)vendor-advisoryx_refsource_GENTOOx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://us-cert.cisa.gov/ics/advisories/icsa-21-103-11 (opens in a new tab)x_refsource_MISCx_transferred
• https://cert-portal.siemens.com/productcert/pdf/ssa-211752.pdf (opens in a new tab)x_refsource_CONFIRMx_transferred
• https://www.arista.com/en/support/advisories-notices/security-advisories/1332-security-advisory-19 (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)

Badge for a README or a ticket

[![CVE-2015-8138](https://trackcve.app/badge/CVE-2015-8138.svg)](https://trackcve.app/cve/CVE-2015-8138)

Record last updated 6 Aug 2024, 08:13 UTC.