Improper input validation in NTP
CVE-2015-5194
The log_config_command function in ntp_parser.y in ntpd in NTP before 4.2.7p42 allows remote attackers to cause a denial of service (ntpd crash) via crafted logconfig commands.
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: 0.065 (93.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 94th percentile — 93.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.055 · newest: 0.065 · change: +0.009
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
- 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
- SUSE Linux Enterprise Debuginfo — versions 11
- SUSE Linux Enterprise Server — versions 10, 11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- lists.opensuse.org/opensuse-security-announce/2016-07/msg00026.html (vendor-advisory, Third Party Advisory)
- www-01.ibm.com/support/docview.wss (Third Party Advisory)
- www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html
- bk1.ntp.org/ntp-dev/ (Patch, Issue Tracking, Vendor Advisory)
- www.securityfocus.com/bid/76475 (VDB Entry, Third Party Advisory, vdb-entry)
- www.ubuntu.com/usn/USN-2783-1 (vendor-advisory, Third Party Advisory)
- github.com/ntp-project/ntp/commit/553f2fa65865c31c5e3c48812cfd46176cffdd27 (Patch, Third Party Advisory, Issue Tracking)
- 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)
Frequently asked questions
- What is CVE-2015-5194?
- CVE-2015-5194 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-2015-5194?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2015-5194 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.