Back
CVE-2015-7974
NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might…
High7.7EPSS 5.7%
- Published
- Updated
- Reserved
- Assigned by
- mitre
Description
NTP 4.x before 4.2.8p6 and 4.3.x before 4.3.90 do not verify peer associations of symmetric keys when authenticating packets, which might allow remote attackers to conduct impersonation attacks via an arbitrary trusted key, aka a "skeleton key."
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.1 | High7.7 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 5.7% · top 7.0% of all CVEs (3 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.
Weakness
Affected products
n/a
- affected n/a
References (14)
- http://www.talosintel.com/reports/TALOS-2016-0071/ (opens in a new tab)x_refsource_MISCx_transferred
- DSA-3629 (opens in a new tab)vendor-advisoryx_refsource_DEBIANx_transferred
- 81960 (opens in a new tab)vdb-entryx_refsource_BIDx_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
- http://support.ntp.org/bin/view/Main/NtpBug2936 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 1034782 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_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
- RHSA-2016:2583 (opens in a new tab)vendor-advisoryx_refsource_REDHATx_transferred
- https://security.netapp.com/advisory/ntap-20171031-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- http://bugs.ntp.org/show_bug.cgi?id=2936 (opens in a new tab)x_refsource_CONFIRMx_transferred
- FreeBSD-SA-16:09 (opens in a new tab)vendor-advisoryx_refsource_FREEBSDx_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
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
[](https://trackcve.app/cve/CVE-2015-7974)Record last updated .