HIGH
CVE-2015-5219
CWE-704Published: July 21, 2017· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
The ULOGTOD function in ntp.d in SNTP before 4.2.7p366 does not properly perform type conversions from a precision value to a double, which allows remote attackers to cause a denial of service (infinite loop) via a crafted NTP packet.
Technical Analysis
CVE-2015-5219 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.
A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.
CVSS v3.1 Vector Breakdown
Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
Canonical1 product(s)
ubuntu linux
Debian1 product(s)
debian linux
Fedora1 product(s)
fedora
novell1 product(s)
leap
ntp1 product(s)
ntp
openSUSE1 product(s)
leap
Oracle1 product(s)
linux
Red Hat4 product(s)
enterprise linux desktopenterprise linux hpc nodeenterprise linux serverenterprise linux workstation
siemens4 product(s)
tim 4r-ie firmwaretim 4r-ietim 4r-id dnp3 firmwaretim 4r-id dnp3
SUSE5 product(s)
linux enterprise debuginfolinux enterprise servermanagermanager proxyopenstack cloud
Source: NVD CPE · 31 total CPE entries
Exploit & PoC Resources
NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.
Official Patches & Advisories
All References (48)
→
http://aix.software.ibm.com/aix/efixes/security/ntp_advisory4.ascThird Party Advisory
→
http://bk1.ntp.org/ntp-dev/?PAGE=patch&REV=51786731Gr4-NOrTBC_a_uXO4wuGhgIssue Tracking · Patch · Third Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2015-November/170926.htmlMailing List · Third Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2015-October/169167.htmlMailing List · Third Party Advisory
→
http://lists.fedoraproject.org/pipermail/package-announce/2015-September/166992.htmlMailing List · Third Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
→
http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
→
http://www.debian.org/security/2015/dsa-3388Third Party Advisory
→
http://www.openwall.com/lists/oss-security/2015/08/25/3Mailing List · Patch · Third Party Advisory
→
→
http://www.securityfocus.com/bid/76473Third Party Advisory · VDB Entry
→
http://www.ubuntu.com/usn/USN-2783-1Third Party Advisory
→
https://bugzilla.redhat.com/show_bug.cgi?id=1255118Issue Tracking
Quick Facts
CVE IDCVE-2015-5219
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-704
CISA KEVNo
Affected10 vendor(s)
PublishedJul 21, 2017
Related CVEs (CWE-704)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-5219 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.