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 allow remote attackers to conduct impersonation attacks via an
02 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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 5.65% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 92.7% of scored records. A rank, not a probability.
- NVD base score
- 7.7 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2016-01-26 19:00Z10 YR AGO
- Last updated
- 2024-08-06 08:06Z2 YR AGO
- Reserved
- 2015-10-23
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- Data version
- 5.1
- Document digest
- 386d6af028b9f7f1370108ac77e770299915ec8d58583c6e7f0ffd21998cd838
05 Affected products
06 References
- www.talosintel.comhttp://www.talosintel.com/reports/TALOS-2016-0071/
- www.debian.orgDSA-3629http://www.debian.org/security/2016/dsa-3629
- www.securityfocus.com81960http://www.securityfocus.com/bid/81960
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
- support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug2936
- www.securitytracker.com1034782http://www.securitytracker.com/id/1034782
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
- rhn.redhat.comRHSA-2016:2583http://rhn.redhat.com/errata/RHSA-2016-2583.html
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20171031-0001/
- bugs.ntp.orghttp://bugs.ntp.org/show_bug.cgi?id=2936
- security.freebsd.orgFreeBSD-SA-16:09https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
- security.gentoo.orgGLSA-201607-15https://security.gentoo.org/glsa/201607-15
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-497656.pdf
- us-cert.cisa.govhttps://us-cert.cisa.gov/ics/advisories/icsa-21-103-11
07 Fixed in
Debian 11
- ntp Fixed in 1:4.2.8p7+dfsg-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- ntp Fixed in 1:4.2.6.p5+dfsg-3ubuntu2.14.04.10
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- ntp Fixed in 1:4.2.8p4+dfsg-3ubuntu5.3
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.