Improper input validation in NTP
CVE-2015-5195
ntp_openssl.m4 in ntpd in NTP before 4.2.7p112 allows remote attackers to cause a denial of service (segmentation fault) via a crafted statistics or filegen configuration command that is not enabled during compilation.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
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: 0.075 (94.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 94.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.075 · newest: 0.075 · change: 0.000
Affected products
- NTP
- Canonical Ubuntu Linux — versions 12.04, 14.04, 15.04
- Debian Linux — versions 7.0, 8.0
- Fedoraproject Fedora — versions 21, 22, 23
- Red Hat Enterprise Linux Desktop — versions 6.0, 7.0
- Red Hat Enterprise Linux Hpc Node — versions 6.0, 7.0
- Red Hat Enterprise Linux Server — versions 6.0, 7.0
- Red Hat Enterprise Linux Workstation — versions 6.0, 7.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Issue Tracking)
- www-01.ibm.com/support/docview.wss (Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- github.com/ntp-project/ntp/commit/52e977d79a0c4ace997e5c74af429844da2f27be (Patch, Third Party Advisory, Issue Tracking)
- www.ubuntu.com/usn/USN-2783-1 (vendor-advisory, Third Party Advisory)
- www-01.ibm.com/support/docview.wss (Third Party Advisory)
- www-01.ibm.com/support/docview.wss (Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-2583.html (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.html (vendor-advisory, Third Party Advisory)
- rhn.redhat.com/errata/RHSA-2016-0780.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2015-5195?
- CVE-2015-5195 is a high-severity vulnerability in NTP, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2017-07-21.
- How severe is CVE-2015-5195?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-5195 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.