HIGH
CVE-2015-5195
CWE-20Published: July 21, 2017· Updated: Jun 17, 2026
7.5
CVSS v3.1
Official Description
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.
Technical Analysis
CVE-2015-5195 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:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Vendors & Products
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 (34)
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http://rhn.redhat.com/errata/RHSA-2016-0780.htmlThird Party Advisory
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http://rhn.redhat.com/errata/RHSA-2016-2583.htmlThird Party Advisory
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http://www.debian.org/security/2015/dsa-3388Third Party Advisory
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http://www.openwall.com/lists/oss-security/2015/08/25/3Mailing List · Patch · Third Party Advisory
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http://www.securityfocus.com/bid/76474Third Party Advisory · VDB Entry
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http://www.ubuntu.com/usn/USN-2783-1Third Party Advisory
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https://bugzilla.redhat.com/show_bug.cgi?id=1254544Issue Tracking
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https://github.com/ntp-project/ntp/commit/52e977d79a0c4ace997e5c74af429844da2f27beIssue Tracking · Patch · Third Party Advisory
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https://www-01.ibm.com/support/docview.wss?uid=isg3T1024157Third Party Advisory
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https://www-01.ibm.com/support/docview.wss?uid=swg21985122Third Party Advisory
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https://www-01.ibm.com/support/docview.wss?uid=swg21986956Third Party Advisory
Quick Facts
CVE IDCVE-2015-5195
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-20
CISA KEVNo
Affected5 vendor(s)
PublishedJul 21, 2017
Related CVEs (CWE-20)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2015-5195 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.