CVE-2015-7974
HIGH
7.7
CVSS Score
Published: January 26, 2016 at 07:00 PM UTC
Updated: June 17, 2026 at 12:33 AM UTC
8 products affected across 4 vendorsDebian LinuxClustered Data ONTAPNTP
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Severity
HIGH7.7
Exploit prediction
EPSS 6%
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."
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Debian Linux· Debiandrupal
95%All versions
All versions
4.2.0 ≤ v < 4.2.84.3.0 ≤ v < 4.3.904.2.84.2.8 p14.2.8 p1-beta14.2.8 p1-beta24.2.8 p1-beta34.2.8 p1-beta44.2.8 p1-beta54.2.8 p1-rc14.2.8 p1-rc24.2.8 p24.2.8 p2-rc14.2.8 p2-rc24.2.8 p2-rc34.2.8 p34.2.8 p3-rc14.2.8 p3-rc24.2.8 p3-rc34.2.8 p44.2.8 p5
Affected range stops below 4.2.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 4.3.90, so it looks safe — our inference, not a vendor statement
TIM 4R-IE DNP3· Siemensdevice
80%All versions
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (14)
x_refsource_CONFIRMIssue TrackingVendor Advisory
Source: [email protected]
http://bugs.ntp.org/show_bug.cgi?id=2936Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlx_refsource_CONFIRMVendor Advisory
Source: [email protected]
http://support.ntp.org/bin/view/Main/NtpBug2936Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
http://www.debian.org/security/2016/dsa-3629VDB Entryx_refsource_BIDThird Party Advisory
Source: [email protected]
http://www.securityfocus.com/bid/81960VDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1034782x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://www.talosintel.com/reports/TALOS-2016-0071/x_refsource_CONFIRMThird Party Advisory
Source: [email protected]
https://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdfCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- LOW
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality
- NONE
- Integrity
- HIGH
- Availability
- NONE
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-287
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