CVE-2017-7143: n/a: Cleartext Transmission of Sensitive Information

Recommended actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Fix not verified

What, why and how

An issue was discovered in certain Apple products. macOS before 10.13 is affected. The issue involves the "Captive Network Assistant" component. It allows remote attackers to discover cleartext passwords in opportunistic circumstances by sniffing the network during use of the captive portal browser, which has a UI error that can lead to cleartext transmission without the user's awareness.

What

Why

The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Why

The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.

How

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: local access → Cleartext Transmission of Sensitive Information → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface: Local
Privileges required: Low: a basic authenticated account is required
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-319 ↗
CWE-319: Cleartext Transmission of Sensitive Information. The product transmits sensitive or security-critical data in cleartext in a communication channel that can be sniffed by unauthorized actors.
CVSS vector ? CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Common Vulnerability Scoring System 3.0: the compact vector below is decoded into plain language.
AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land: The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.

CWE-319

Official authority intelligence

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

ENISA EUVD · EUVD-2017-16181Official EUVD mapping

0 linked advisory records.

Official EUVD record ↗

BSI · German · WID-SEC-2025-0370Apple Mac OS: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstelle in Apple Mac OS ausnutzen, um Code mit Kernel Privilegien auszuführen, Sicherheitsvorkehrungen zu umgehen, einen Denial of Service Angriff durchzuführen oder vertrauliche Daten einzusehen.

Official advisory ↗

Canadian Centre for Cyber Security · English · AV17-143Apple security updates

459, CVE-2017-6460, CVE-2017-6462, CVE-2017-6463, CVE-2017-6464, CVE-2017-7074, CVE-2017-7077, CVE-2017-7078, CVE-2017-7081, CVE-2017-7082, CVE-2017-7083, CVE-2017-7084, CVE-2017-7087, CVE-2017-7090, CVE-2017-7091, CVE-2017-7093, CVE-2017-7094, CVE-2017-7095, CVE-2017-7096, CVE-2017-7097, CVE-2017-7098, CVE-2017-7099, CVE-2017-7100, CVE-2017-7102, CVE-2017-7104, CVE-2017-7106, CVE-2017-7107, CVE-2017-7109, CVE-2017-7111, CVE-2017-7114; CVE-2017-7086, CVE-2017-7117, CVE-2017-7119, CVE-2017-7120, CVE-2017-7121, CVE-2017-7122, CVE-2017-7123, CVE-2017-7124, CVE-2017-7125, CVE-2017-7126, CVE-2017-7127, CVE-2017-7128, CVE-2017-7129, CVE-2017-7141, CVE-2017-7143, CVE-2017-9233, CVE-2017-10978, CVE-2017-10979, CVE-2017-10989, CVE-2017-11103, CVE-2017-1000373 Suggested Action CCIRC recommends that owner/operators test and deploy the vendor released updates or workarounds to affected platforms. References: https://support.apple.com/en-us/HT208142 https://support.apple.com/en-us/HT208144 https://support.apple.com/en-us/HT208102

Official advisory ↗

CERT-FR · French · CERTFR-2017-AVI-320Multiples vulnérabilités dans les produits Apple

.cve.org/CVERecord?id=CVE-2017-7124 Référence CVE CVE-2017-7125 https://www.cve.org/CVERecord?id=CVE-2017-7125 Référence CVE CVE-2017-7126 https://www.cve.org/CVERecord?id=CVE-2017-7126 Référence CVE CVE-2017-7127 https://www.cve.org/CVERecord?id=CVE-2017-7127 Référence CVE CVE-2017-7128 https://www.cve.org/CVERecord?id=CVE-2017-7128 Référence CVE CVE-2017-7129 https://www.cve.org/CVERecord?id=CVE-2017-7129 Référence CVE CVE-2017-7130 https://www.cve.org/CVERecord?id=CVE-2017-7130 Référence CVE CVE-2017-7138 https://www.cve.org/CVERecord?id=CVE-2017-7138 Référence CVE CVE-2017-7141 https://www.cve.org/CVERecord?id=CVE-2017-7141 Référence CVE CVE-2017-7143 https://www.cve.org/CVERecord?id=CVE-2017-7143 Référence CVE CVE-2017-9233 https://www.cve.org/CVERecord?id=CVE-2017-9233 Gestion détaillée du document le 26 septembre 2017 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗

JVN iPedia · Japanese · JVNDB-2017-009338Apple macOS の Captive Network Assistant コンポーネントにおける平文のパスワードを取得される脆弱性

Apple macOS の Captive Network Assistant コンポーネントには、平文のパスワードを取得される脆弱性が存在します。

Official advisory ↗

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. Limit untrusted access and use least privilege until authoritative guidance is available.

Evidence and provenance

Published 23 Oct 2017 · Last source change 5 Aug 2024, 15:56 UTC · CWE-319 · Cleartext Transmission of Sensitive Information

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-2017-16181

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 ↗

5 Aug 2024, 15:56 UTC
Vendor guidanceAuthoritative vendor guidance changed from no authoritative guidance recorded to vendor advisory.
Before
no authoritative guidance recorded
After
vendor advisory
af854a3a-2127-422b-91ae-364da2661108 ↗
5 Aug 2024, 15:56 UTC
SeveritySeverity changed from Unknown to Medium.
Before
Unknown
After
Medium
NIST NVD ↗
5 Aug 2024, 15:56 UTC
CVSS scoreCVSS score changed from not recorded to 5.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N).
Before
not recorded
After
5.5 (CVSS 3.0 · NIST NVD · CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
NIST NVD ↗
1 Sept 2026, 02:42 UTC
ENISA EUVD mappingEUVD-2017-16181 was added to the official ENISA EUVD mapping for this CVE.
Before
not recorded
After
{"euvdId":"EUVD-2017-16181"}
ENISA EUVD ↗
5 Aug 2024, 15:56 UTC
Catalogue recordCVE added to the BlackTree catalogue.
CNA ↗

2017-10-23CVE published

ENISA EUVD · EUVD-2017-16181↗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.

n/a: Cleartext Transmission of Sensitive Information

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

ENISA European Vulnerability Database

EUVD-2017-16181

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

What changed after publication

n/a: Cleartext Transmission of Sensitive Information

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

EUVD-2017-16181

What, why and how

Exploit reality and attack path

Official authority intelligence

Patch and workaround

Evidence and provenance

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