BlackTreeCVE Intelligence
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Full vulnerability report · 2017
CVE-2015-7704High confidence

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages

n/a · n/a

7.5HighCVSS 3.1
Recommended action
Within 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2015-7605

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

What

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

What

The ntpd client in NTP 4.x before 4.2.8p4 and 4.3.x before 4.3.77 allows remote attackers to cause a denial of service via a number of crafted "KOD" messages.

Why

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may disrupt the affected service.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
a network path → Improper Input Validation → disrupt the affected service
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-20 ↗

CWE-20: Improper Input Validation. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedDenial of serviceCWE-20
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

Canadian Centre for Cyber Security · English · AV17-067Rockwell Automation Stratix 5900 security update

ate for the Stratix 5900. Assessment Rockwell Automation has released security updates to address 41 vulnerabilities in its Stratix 5900 industrial router products. The severity of the vulnerabilities range from high to critical, and exploitation could allow an unprivileged attacker to remotely execute code and/or create denial of service conditions. Affected software versions: Stratix 5900 version 15.6.3 EA and earlier CVE References: CVE-2016-6380, CVE-2016-6393, CVE-2016-6384, CVE-2016-6381, CVE-2016-6382, CVE-2016-6415, CVE-2016-1409, CVE-2016-1350, CVE-2016-1344, CVE-2015-7691, CVE-2015-7692, CVE-2015-7701, CVE-2015-7702, CVE-2015-7703, CVE-2015-7704, CVE-2015-7705, CVE-2015-7848, CVE-2015-7849, CVE-2015-7850, CVE-2015-7851, CVE-2015-7852, CVE-2015-7853, CVE-2015-7854, CVE-2015-7855, CVE-2015-7871, CVE-2015-1798, CVE-2015-0642, CVE-2015-0643, CVE-2015-0646, CVE-2015-0207, CVE-2015-0209, CVE-2015-0285, CVE-2015-0287, CVE-2015-0288, CVE-2015-0289, CVE-2015-0290, CVE-2015-0291, CVE-2015-0292, CVE-2015-0293, CVE-2015-1787, CVE-2014-3566, CVE-2014-3359, CVE-2014-3355, CVE-2014-3361, CVE-2014-3354, CVE-2014-3360, CVE-2014-3299, CVE-2010-5298, CVE-2014-0076, CVE-2014-0195, CVE-2014-0198, CVE-2014-0221, CVE-2014-0224, CVE-2014-3470, CVE-2014-2113, CVE-2014-2108, CVE-2014-2109, CVE-2014-2111, CVE

Official advisory ↗
CERT-FR · French · CERTFR-2018-AVI-545Multiples vulnérabilités dans Juniper Junos OS

De multiples vulnérabilités ont été découvertes dans Juniper Junos OS. Elles permettent à un attaquant de provoquer une exécution de code arbitraire à distance, un déni de service à distance et une atteinte à l'intégrité des données.

Official advisory ↗
CERT-FR · French · CERTFR-2016-AVI-153Multiples vulnérabilités dans les produits Cisco

té Cisco cisco-sa-20160504-firepower du 04 mai 2016 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-firepower Bulletin de sécurité Cisco cisco-sa-20160504-fpkern du 04 mai 2016 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-fpkern Bulletin de sécurité Cisco cisco-sa-20160504-openssl du 04 mai 2016 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-openssl Bulletin de sécurité Cisco cisco-sa-20160504-tpxml du 04 mai 2016 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20160504-tpxml Référence CVE CVE-2015-7704 https://www.cve.org/CVERecord?id=CVE-2015-7704 Référence CVE CVE-2015-8138 https://www.cve.org/CVERecord?id=CVE-2015-8138 Référence CVE CVE-2016-1343 https://www.cve.org/CVERecord?id=CVE-2016-1343 Référence CVE CVE-2016-1368 https://www.cve.org/CVERecord?id=CVE-2016-1368 Référence CVE CVE-2016-1369 https://www.cve.org/CVERecord?id=CVE-2016-1369 Référence CVE CVE-2016-1373 https://www.cve.org/CVERecord?id=CVE-2016-1373 Référence CVE CVE-2016-1386 https://www.cve.org/CVERecord?id=CVE-2016-1386 Référence CVE CVE-2016-1387 https://www.cve.org/CVERecord?id=CVE-2016-1387 Référence CVE CVE-2016-1389 https://www.cve.org/CVERecord?id=CVE-2016-1389 Ré

Official advisory ↗
CERT-FR · French · CERTFR-2015-AVI-449Multiples vulnérabilités dans NTP

De multiples vulnérabilités ont été corrigées dans NTP . Elles permettent à un attaquant de provoquer un déni de service à distance et une atteinte à la confidentialité des données.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2015-007700NTP における入力確認に関する脆弱性

NTP には、入力確認に関する脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-4561NTP 다중 취약점 보안 업데이트 권고

timestamp 유효성 검사를 하는 클라이언트에서 발생할 수 있는 KoD 취약점(CVE-2015-7704, CVE-2015-7705)

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix not verified
Affected
n/a: n/a
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 7 Aug 2017 · Last source change 6 Aug 2024, 07:58 UTC · CWE-20 · Improper Input Validation

CVE recordCVE.org · 5.1
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-09-01
European sourceENISA EUVD · EUVD-2015-7605
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceNIST NVD
NVD statusNVD modified after enrichment

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Vendor guidanceAuthoritative vendor guidance changed from vendor advisory to vendor advisory.
    Before
    vendor advisory
    After
    vendor advisory
    af854a3a-2127-422b-91ae-364da2661108 ↗
  2. SeveritySeverity changed from Unknown to High.
    Before
    Unknown
    After
    High
    NIST NVD ↗
  3. CVSS scoreCVSS score changed from not recorded to 7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).
    Before
    not recorded
    After
    7.5 (CVSS 3.1 · NIST NVD · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
    NIST NVD ↗
  4. ENISA EUVD mappingEUVD-2015-7605 was added to the official ENISA EUVD mapping for this CVE.
    Before
    not recorded
    After
    {"euvdId":"EUVD-2015-7605"}
    ENISA EUVD ↗
  5. Catalogue recordCVE added to the BlackTree catalogue.
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
ENISA EUVD · EUVD-2015-7605↗Vendor advisory↗Vendor advisory↗Vendor advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2015-7704 · cve.blacktree.nl