Buffer overflow in NTP
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).
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.2 (Medium). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.006 (48.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 49th percentile — 48.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · 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)
- h20566.www2.hpe.com/hpsc/doc/public/display
- www.securityfocus.com/bid/81959 (VDB Entry, Third Party Advisory, vdb-entry)
- 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-2015-7975?
- CVE-2015-7975 is a medium-severity vulnerability in NTP, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 6.2/10. Published 2017-01-30.
- How severe is CVE-2015-7975?
- Medium severity. CVSS v3 base score is 6.2 out of 10.