{"item": {"cve_id": "CVE-2017-6743", "ghsa_id": "", "osv_id": "", "title": "CVE-2017-6743", "description": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE Software contains multiple vulnerabilities that could allow an authenticated, remote attacker to remotely execute code on an affected system or cause an affected system to reload. An attacker could exploit these vulnerabilities by sending a crafted SNMP packet to an affected system via IPv4 or IPv6. Only traffic directed to an affected system can be used to exploit these vulnerabilities.\r\n\r\nThe vulnerabilities are due to a buffer overflow condition in the SNMP subsystem of the affected software. The vulnerabilities affect all versions of SNMP - Versions 1, 2c, and 3. To exploit these vulnerabilities via SNMP Version 2c or earlier, the attacker must know the SNMP read-only community string for the affected system. To exploit these vulnerabilities via SNMP Version 3, the attacker must have user credentials for the affected system. A successful exploit could allow the attacker to execute arbitrary code and obtain full control of the affected system or cause the affected system to reload.\r\n\r\nCustomers are advised to apply the workaround as contained in the Workarounds section below. Fixed software information is available via the Cisco IOS Software Checker. All devices that have enabled SNMP and have not explicitly excluded the affected MIBs or OIDs should be considered vulnerable.\r\n\r\n  There are workarounds that address these vulnerabilities.", "published_at": "2017-07-17T21:29:00.477", "modified_at": "2026-06-17T01:22:56.347", "vendor": "Cisco", "product": "Ios", "affected_versions": ["12.1(3)XI", "12.2(1b)DA", "12.2(5)DA", "12.2(7)DA", "12.2(12)DA", "12.2(10)DA5", "12.2(12)DA10", "12.2(10)DA", "12.2(12)DA1", "12.2(12)DA6", "12.2(10)DA8", "12.2(12)DA8", "12.2(12)DA11", "12.2(12)DA9", "12.2(12)DA4", "12.2(10)DA3", "12.2(5)DA1", "12.2(12)DA13", "12.2(12)DA12", "12.2(12)DA7", "12.2(1b)DA1", "12.2(10)DA1", "12.2(10)DA6", "12.2(10)DA4", "12.2(12)DA2", "12.2(12)DA3", "12.2(10)DA2", "12.2(12)DA5", "12.2(10)DA7", "12.2(10)DA9", "12.2(4)XL2", "12.2(4)XM", "12.2(4)XM3", "12.2(4)XM2", "12.2(4)XM4", "12.2(4)XM1", "12.2(3d)", "12.2(5b)", "12.2(1)XS1a", "12.2(4)YA", "12.2(4)YA6", "12.2(4)YA3", "12.2(4)YA4", "12.2(4)YA1", "12.2(4)YA11", 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"15.6(1)T", "15.6(2)T", "15.6(1)T0a", "15.6(1)T1", "15.6(2)T1", "15.6(1)T2", "15.6(2)T2", "15.6(3)M", "15.6(3)M1", "15.6(3)M0a", "15.6(3)M1b", "15.6(3)M2", "15.6(3)M2a", "15.1(3)SVJ2", "15.3(3)JPC5", "15.3(3)JPR1", "N/A"], "fixed_versions": [], "cvss_score": 8.8, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "severity": "HIGH", "epss_score": 0.10855, "epss_percentile": 0.95748, "epss_date": "2026-10-06", "is_kev": true, "kev_date": "2022-03-03", "kev_due_date": "2022-03-24", "kev_action": "Apply updates per vendor instructions.", "cwe_ids": ["CWE-119"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "LOW", "user_interaction": "NONE", "references": ["https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "http://www.securityfocus.com/bid/99345", "http://www.securitytracker.com/id/1038808", "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2017-6743", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2017-6743", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2017-6743"}, "patch_available": null, "workaround_available": null, "sources": ["NVD", "CVE.org", "CISA", "FIRST EPSS"], "reference_items": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "tags": ["Vendor Advisory"], "source": "NVD", "name": ""}, {"url": "http://www.securityfocus.com/bid/99345", "tags": ["Third Party Advisory", "VDB Entry", "vdb-entry", "x_refsource_BID", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.securitytracker.com/id/1038808", "tags": ["Third Party Advisory", "VDB Entry", "vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "tags": ["Vendor Advisory", "x_refsource_CONFIRM", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743", "tags": ["US Government Resource", "government-resource"], "source": "NVD", "name": ""}], "cvss_v4_score": null, "cvss_v4_vector": "", "cvss_v4_severity": "", "nvd_status": "Analyzed", "cna": "cisco", "date_reserved": "2017-03-09T00:00:00.000Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "no", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2024-11-08T17:35:10.951116Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Cisco", "product": "Ios", "ranges": ["de 12.0 à 12.4 (incluse)", "de 15.0 à 15.6 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Cisco", "product": "Ios Xe", "ranges": ["de 2.2.0 à 3.17 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "IntelliShield", "product": "Universal Product", "ranges": ["N/A"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Cisco IOS and IOS XE Software SNMP Remote Code Execution Vulnerability", "kev_short_description": "The Simple Network Management Protocol (SNMP) subsystem of Cisco IOS and IOS XE contains a vulnerability that could allow an authenticated, remote attacker to remotely execute code.", "kev_ransomware": "Unknown", "kev_notes": "https://nvd.nist.gov/vuln/detail/CVE-2017-6743", "kev_cwes": ["CWE-119"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 61, "risk_class": "Important", "impact": {"confidentialite": "élevé", "integrite": "élevé", "disponibilite": "élevé", "summary": "Un attaquant exploitant cette vulnérabilité pourrait, selon les conditions décrites par les sources, exploitable à distance (réseau), avec des privilèges existants, affecter la confidentialité des données, l'intégrité du système et la disponibilité du service.", "basis": "CVSS 3.1"}, "mechanism": "Gestion incorrecte des limites d'un tampon mémoire.", "mitigation": {"correction": {"available": false, "text": "Correctif non identifié dans les sources consultées. Appliquer la mise à jour de l'éditeur dès qu'elle est disponible."}, "mitigation": {"specific": "Aucune mesure de mitigation spécifique confirmée par les sources consultées. Consultez les références officielles pour d'éventuelles mesures détaillées.", "general": ["Maintenir le produit à jour et activer les mises à jour de sécurité.", "Restreindre l'exposition réseau du service au strict nécessaire.", "Appliquer le principe du moindre privilège.", "Surveiller les journaux et les alertes de sécurité."], "specific_links": []}, "containment": {"applicable": true, "actions": ["Action recommandée par la CISA : Apply updates per vendor instructions.", "Isoler ou restreindre l'accès au service concerné.", "Restreindre les flux réseau entrants/sortants liés au composant.", "Renforcer la surveillance des journaux et des accès.", "Désactiver temporairement le composant vulnérable si l'activité le permet."]}, "note": "Priorité aux consignes officielles de l'éditeur et des références. Vérifiez toujours l'avis de sécurité avant toute intervention en production.", "official_links": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur", "editeur": "Cisco", "domaine": "sec.cloudapps.cisco.com"}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur", "editeur": "Cisco", "domaine": "tools.cisco.com"}]}, "plain": {"verdict": "now", "verdict_label": "Exploité par des attaquants · à traiter aujourd'hui", "verdict_css": "now", "verdict_rank": 0, "headline": "Une zone mémoire peut déborder et déstabiliser Ios", "headline_is_derived": true, "action": "Action officielle recommandée par la CISA : Installer les mises à jour publiées par l'éditeur.", "action_kind": "official", "concerned": [{"version": "12.1(3)XI, 12.2(1b)DA, 12.2(5)DA, 12.2(7)DA", "state": "hit", "state_label": "Concerné", "todo": "Action officielle recommandée par la CISA : Installer les mises à jour publiées par l'éditeur."}, {"version": "Je ne connais pas ma version", "state": "unknown", "state_label": "À vérifier", "todo": "La version s'affiche généralement dans le menu « À propos » ou « Aide » du logiciel."}], "steps": [{"title": "Sauvegarder avant d'intervenir", "detail": "Une copie récente des données et de la configuration. Si votre hébergeur propose une sauvegarde en un clic, c'est le moment.", "duration": "10 min", "priority": false}, {"title": "Action officielle recommandée par la CISA : Installer les mises à jour publiées par l'éditeur", "detail": "C'est la correction officielle. Tant qu'elle n'est pas appliquée, les autres mesures ne sont que temporaires.", "duration": "15 à 45 min", "priority": true}, {"title": "En attendant : réduire l'exposition sur Internet", "detail": "La faille est exploitable à distance. Limiter l'accès au service depuis l'extérieur (pare-feu, filtrage d'adresses, VPN) réduit fortement le risque.", "duration": "30 min", "priority": false}, {"title": "Vérifier que vous n'avez pas déjà été touché", "detail": "Cette faille est activement exploitée. Contrôler les comptes créés récemment, les connexions inhabituelles et les fichiers modifiés depuis la date de publication.", "duration": "30 min", "priority": true}, {"title": "Confirmer que tout fonctionne encore", "detail": "Après correction : page d'accueil, connexion, et les deux ou trois fonctions dont vous vous servez tous les jours.", "duration": "10 min", "priority": false}], "exploited": true, "exploited_label": "Oui, des attaques réelles sont constatées", "fixed_label": "Correctif non identifié dans les sources", "affected_label": "12.1(3)XI, 12.2(1b)DA, 12.2(5)DA, 12.2(7)DA"}, "severity_display": "Élevée", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2017-6743", "severity_fr": "Élevée", "epss_pct": 10.9, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2017-07-17", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6743"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2017-07-17", "url": "https://www.cve.org/CVERecord?id=CVE-2017-6743"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2022-03-03", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743"}, {"source": "FIRST EPSS", "label": "FIRST EPSS", "date_label": "Score daté du", "date": "2026-10-06", "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-6743"}], "exploit_public": false, "reseau_sans_auth": false, "exposition": "À distance, sous conditions (compte ou action d'un utilisateur)", "owasp": []}, "presentation": {"en_bref": [{"question": "Est-elle attaquée ?", "ton": "alerte", "reponse": "Oui, attaques constatées", "source": "Catalogue CISA KEV"}, {"question": "Existe-t-il un correctif ?", "ton": "vigilance", "reponse": "Non identifié dans les sources", "source": "Vérifier l'avis de l'éditeur"}, {"question": "Comment l'attaquer ?", "ton": "neutre", "reponse": "À distance, sous conditions (compte ou action d'un utilisateur)", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "10,9 % sur 30 jours", "source": "Plus probable que 96 % des failles connues"}], "references": [{"cle": "avis_editeur", "titre": "Avis de sécurité de l'éditeur", "explication": "La parole de l'éditeur du produit : elle fait foi pour savoir quoi installer.", "items": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "domaine": "sec.cloudapps.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "domaine": "tools.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false}]}, {"cle": "avis_tiers", "titre": "Avis d'autorités et d'organismes tiers", "explication": "CERT, agences gouvernementales, bases de vulnérabilités, chercheurs.", "items": [{"url": "http://www.securityfocus.com/bid/99345", "domaine": "www.securityfocus.com", "editeur": "", "etiquettes": ["Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": true, "casse": false}, {"url": "http://www.securitytracker.com/id/1038808", "domaine": "www.securitytracker.com", "editeur": "", "etiquettes": ["Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale américaine", "Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}], "liens_correction": [{"url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "domaine": "sec.cloudapps.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false, "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur"}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170629-snmp", "domaine": "tools.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis de l'éditeur"], "nom": "", "lien": true, "casse": false, "groupe": "avis_editeur", "groupe_titre": "Avis de sécurité de l'éditeur"}], "nb_exploits": 0, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "metriques": [{"code": "AV", "nom": "Vecteur d'attaque", "valeur": "Réseau (à distance, y compris par Internet)", "brut": "N", "explication": "D'où l'attaquant doit agir."}, {"code": "AC", "nom": "Complexité de l'attaque", "valeur": "Faible", "brut": "L", "explication": "Conditions hors du contrôle de l'attaquant."}, {"code": "PR", "nom": "Privilèges requis", "valeur": "Faibles (compte ordinaire)", "brut": "L", "explication": "Droits dont l'attaquant a besoin avant d'attaquer."}, {"code": "UI", "nom": "Interaction de l'utilisateur", "valeur": "Aucune", "brut": "N", "explication": "Une victime doit-elle cliquer ou ouvrir quelque chose ?"}, {"code": "S", "nom": "Portée", "valeur": "Inchangée", "brut": "U", "explication": "L'attaque peut-elle toucher d'autres composants que celui qui est vulnérable ?"}, {"code": "C", "nom": "Confidentialité", "valeur": "Élevé", "brut": "H", "explication": "Accès à des informations protégées."}, {"code": "I", "nom": "Intégrité", "valeur": "Élevé", "brut": "H", "explication": "Modification de données ou du système."}, {"code": "A", "nom": "Disponibilité", "valeur": "Élevé", "brut": "H", "explication": "Arrêt ou ralentissement du service."}], "calculateur": "https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "specification": "https://www.first.org/cvss/v3.1/specification-document"}, "cvss4": null, "cwe": [{"id": "CWE-119", "nom": "Improper Restriction of Operations within the Bounds of a Memory Buffer", "url": "https://cwe.mitre.org/data/definitions/119.html"}], "owasp": [], "ssvc": {"lignes": [{"nom": "Exploitation", "valeur": "Exploitation active constatée", "brut": "active"}, {"nom": "Automatisable", "valeur": "Non : l'attaque ne peut pas être entièrement automatisée", "brut": "no"}, {"nom": "Impact technique", "valeur": "Total : contrôle complet du composant ou de ses informations", "brut": "total"}], "version": "2.0.3", "date": "2024-11-08", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2017-03-09", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2017-07-17", "libelle": "Publication de la vulnérabilité", "qui": "cisco"}, {"date": "2022-03-03", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2022-03-24", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2024-11-08", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2026-06-17", "libelle": "Dernière mise à jour de la fiche source", "qui": "Source"}, {"date": "2026-10-06", "libelle": "Calcul du score EPSS affiché", "qui": "FIRST"}], "liens_officiels": [{"nom": "NVD (NIST)", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-6743", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2017-6743", "description": "Enregistrement officiel publié par l'organisme qui a attribué l'identifiant."}, {"nom": "CISA KEV", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-6743", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-6743", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2017-6743", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2017-6743", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Cisco", "product": "Ios", "ranges": ["de 12.0 à 12.4 (incluse)", "de 15.0 à 15.6 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Cisco", "product": "Ios Xe", "ranges": ["de 2.2.0 à 3.17 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "IntelliShield", "product": "Universal Product", "ranges": ["N/A"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://nvd.nist.gov/vuln/detail/CVE-2017-6743"]}, "consulted_at": "2026-10-06T19:57:54.140198+00:00"}