Resource exhaustion in NTP
CVE-2015-7978
NTP before 4.2.8p6 and 4.3.0 before 4.3.90 allows a remote attackers to cause a denial of service (stack exhaustion) via an ntpdc relist command, which triggers recursive traversal of the restriction list.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.100 (95.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 95.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.100 · newest: 0.100 · change: 0.000
Affected products
- NTP — versions 4.3.0, 4.3.1, 4.3.2
Weakness classification (CWE)
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160127… (vendor-advisory, Third Party Advisory)
- www.ubuntu.com/usn/USN-3096-1 (vendor-advisory, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2016-04/msg00060.html (vendor-advisory, Third Party Advisory)
- www.debian.org/security/2016/dsa-3629 (vendor-advisory, Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html (vendor-advisory, Third Party Advisory)
- www.securitytracker.com/id/1034782 (VDB Entry, Third Party Advisory, vdb-entry)
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00038.html (vendor-advisory, Third Party Advisory)
- www.kb.cert.org/vuls/id/718152 (US Government Resource, Third Party Advisory, third-party-advisory)
- lists.opensuse.org/opensuse-security-announce/2016-05/msg00020.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-7978?
- CVE-2015-7978 is a high-severity vulnerability in NTP, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2017-01-30.
- How severe is CVE-2015-7978?
- High severity. CVSS v3 base score is 7.5 out of 10.