CVE-2015-7975
The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).
02 Description
The nextvar function in NTP before 4.2.8p6 and 4.3.x before 4.3.90 does not properly validate the length of its input, which allows an attacker to cause a denial of service (application crash).
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
- 0.63% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 50.0% of scored records. A rank, not a probability.
- NVD base score
- 6.2 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- 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
- 2017-01-30 21:00Z9 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
- 320e50c6632eb5de05f05cb73a2e5fd2f4d48f72be3b2582b9376d064cbbc30b
05 Affected products
06 References
- tools.cisco.com20160120 Multiple Vulnerabilities in Network Time Protocol Daemon Affecting Cisco Products - January 2016http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127-ntpd
- www.ubuntu.comUSN-3096-1http://www.ubuntu.com/usn/USN-3096-1
- lists.opensuse.orgSUSE-SU-2016:1177http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03766en_us
- www.securityfocus.com81959http://www.securityfocus.com/bid/81959
- lists.opensuse.orgSUSE-SU-2016:1912http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html
- www.securitytracker.com1034782http://www.securitytracker.com/id/1034782
- lists.opensuse.orgopenSUSE-SU-2016:1292http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html
- www.kb.cert.orgVU#718152https://www.kb.cert.org/vuls/id/718152
- lists.opensuse.orgSUSE-SU-2016:1247http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html
- h20566.www2.hpe.comhttps://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbhf03750en_us
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20171031-0001/
- lists.opensuse.orgSUSE-SU-2016:1311http://lists.opensuse.org/opensuse-security-announce/2016-05/msg00048.html
- lists.opensuse.orgSUSE-SU-2016:2094http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00042.html
- lists.opensuse.orgSUSE-SU-2016:1175http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00059.html
- support.ntp.orghttp://support.ntp.org/bin/view/Main/NtpBug2937
- security.freebsd.orgFreeBSD-SA-16:09https://security.FreeBSD.org/advisories/FreeBSD-SA-16:09.ntp.asc
- bto.bluecoat.comhttps://bto.bluecoat.com/security-advisory/sa113
- lists.opensuse.orgopenSUSE-SU-2016:1423http://lists.opensuse.org/opensuse-updates/2016-05/msg00114.html
- security.gentoo.orgGLSA-201607-15https://security.gentoo.org/glsa/201607-15
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 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.