{"item": {"cve_id": "CVE-2021-3156", "ghsa_id": "", "osv_id": "", "title": "CVE-2021-3156", "description": "Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via \"sudoedit -s\" and a command-line argument that ends with a single backslash character.", "published_at": "2021-01-26T21:15:12.987", "modified_at": "2026-06-17T04:04:45.830", "vendor": "Sudo Project", "product": "Sudo", "affected_versions": ["n/a"], "fixed_versions": [], "cvss_score": 7.8, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "severity": "HIGH", "epss_score": 0.99962, "epss_percentile": 0.99976, "epss_date": "2026-10-06", "is_kev": true, "kev_date": "2022-04-06", "kev_due_date": "2022-04-27", "kev_action": "Apply updates per vendor instructions.", "cwe_ids": ["CWE-193"], "attack_vector": "LOCAL", "attack_complexity": "LOW", "privileges_required": "LOW", "user_interaction": "NONE", "references": ["http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html", "http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html", "http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html", "http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html", "http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html", "http://seclists.org/fulldisclosure/2021/Feb/42", "http://seclists.org/fulldisclosure/2021/Jan/79", "http://seclists.org/fulldisclosure/2024/Feb/3", "http://www.openwall.com/lists/oss-security/2021/01/26/3", "http://www.openwall.com/lists/oss-security/2021/01/27/1", "http://www.openwall.com/lists/oss-security/2021/01/27/2", "http://www.openwall.com/lists/oss-security/2021/02/15/1", "https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html", "https://security.gentoo.org/glsa/202101-33", "https://www.debian.org/security/2021/dsa-4839", "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/", "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/", "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM", "https://www.kb.cert.org/vuls/id/794544", "https://www.oracle.com//security-alerts/cpujul2021.html", "https://www.sudo.ws/stable.html#1.9.5p2", "https://www.openwall.com/lists/oss-security/2021/01/26/3", "https://security.netapp.com/advisory/ntap-20210128-0002/", "https://security.netapp.com/advisory/ntap-20210128-0001/", "https://support.apple.com/kb/HT212177", "https://kc.mcafee.com/corporate/index?page=content&id=SB10348", "https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability", "https://www.synology.com/security/advisory/Synology_SA_21_02", "http://www.openwall.com/lists/oss-security/2021/09/14/2", "https://www.oracle.com/security-alerts/cpuoct2021.html", "https://www.oracle.com/security-alerts/cpuapr2022.html", "http://www.openwall.com/lists/oss-security/2024/01/30/8", "http://www.openwall.com/lists/oss-security/2024/01/30/6", "https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2021-3156", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2021-3156"}, 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"date_reserved": "2021-01-15T00:00:00.000Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "no", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2025-02-03T15:43:52.658146Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Sudo Project", "product": "Sudo", "ranges": ["de 1.8.2 à 1.8.32 (exclue)", "de 1.9.0 à 1.9.5 (exclue)", "1.9.5"], "first_unaffected": ["1.8.32", "1.9.5"], "source": "NVD"}, {"vendor": "Fedoraproject", "product": "Fedora", "ranges": ["32", "33"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Debian", "product": "Debian Linux", "ranges": ["9.0", "10.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Active Iq Unified Manager", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Cloud Backup", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Hci Management Node", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Oncommand Unified Manager Core Package", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Ontap Select Deploy Administration Utility", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Ontap Tools", "ranges": ["9"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Solidfire", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Mcafee", "product": "Web Gateway", "ranges": ["8.2.17", "9.2.8", "10.0.4"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Diskstation Manager Unified Controller", "ranges": ["3.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Diskstation Manager", "ranges": ["6.2"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Skynas Firmware", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "vs960hd Firmware", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Beyondtrust", "product": "Privilege Management For Mac", "ranges": ["avant 21.1.1"], "first_unaffected": ["21.1.1"], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Compact Workstation 3 Firmware", "ranges": ["310"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros es400 Firmware", "ranges": ["de 400 à 410 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Kitchen Display System Firmware", "ranges": ["210"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Workstation 5a Firmware", "ranges": ["5a"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Workstation 6 Firmware", "ranges": ["de 610 à 655 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Communications Performance Intelligence Center", "ranges": ["de 10.3.0.0.0 à 10.3.0.2.1 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "n/a", "product": "n/a", "ranges": ["n/a"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Sudo Heap-Based Buffer Overflow Vulnerability", "kev_short_description": "Sudo contains an off-by-one error that can result in a heap-based buffer overflow, which allows for privilege escalation.", "kev_ransomware": "Unknown", "kev_notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156", "kev_cwes": ["CWE-122", "CWE-193"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 75, "risk_class": "Critique", "impact": {"confidentialite": "élevé", "integrite": "élevé", "disponibilite": "élevé", "summary": "Un attaquant exploitant cette vulnérabilité pourrait, selon les conditions décrites par les sources, nécessite un accès local, avec des privilèges existants, affecter la confidentialité des données, l'intégrité du système et la disponibilité du service.", "basis": "CVSS 3.1"}, "mechanism": "Erreur de décalage d'indice (une case trop loin) dans un parcours de données.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Sudo 1.8.32, Sudo 1.9.5, Privilege Management For Mac 21.1.1."}, "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": "http://www.openwall.com/lists/oss-security/2021/09/14/2", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Openwall (oss-security)", "domaine": "www.openwall.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Fedora", "domaine": "lists.fedoraproject.org"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Fedora", "domaine": "lists.fedoraproject.org"}, {"url": "https://www.oracle.com//security-alerts/cpujul2021.html", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Oracle", "domaine": "www.oracle.com"}, {"url": "https://www.oracle.com/security-alerts/cpuapr2022.html", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Oracle", "domaine": "www.oracle.com"}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "Oracle", "domaine": "www.oracle.com"}, {"url": "https://www.sudo.ws/stable.html#1.9.5p2", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "", "domaine": "www.sudo.ws"}]}, "plain": {"verdict": "now", "verdict_label": "Exploité par des attaquants · à traiter aujourd'hui", "verdict_css": "now", "verdict_rank": 0, "headline": "Un utilisateur ordinaire peut obtenir des droits d'administrateur, depuis l'appareil lui-même", "headline_is_derived": true, "action": "Mettre à jour vers Sudo 1.8.32, Sudo 1.9.5 ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Sudo 1.8.32, Sudo 1.9.5 ou plus récent", "state": "safe", "state_label": "Non concerné", "todo": "Rien à faire. Gardez les mises à jour automatiques activées."}, {"version": "n/a", "state": "hit", "state_label": "Concerné", "todo": "Mettre à jour vers Sudo 1.8.32, Sudo 1.9.5 ou plus récent, version publiée comme non concernée."}, {"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": "Mettre à jour vers Sudo 1.8.32, Sudo 1.9.5 ou plus récent, version publiée comme non concernée", "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 : restreindre l'accès à l'appareil", "detail": "L'exploitation demande un accès local à la machine. Limiter qui peut s'y connecter suffit à contenir le risque immédiat.", "duration": "20 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": "Sudo 1.8.32, Sudo 1.9.5 (non concernée selon les sources)", "affected_label": "n/a"}, "severity_display": "Élevée", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2021-3156", "severity_fr": "Élevée", "epss_pct": 100.0, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2021-01-26", "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par 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publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "100,0 % sur 30 jours", "source": "Plus probable que 100 % des failles connues"}], "references": [{"cle": "correctif", "titre": "Correctifs et versions corrigées", "explication": "Les pages que les sources désignent comme correctif ou notes de version.", "items": [{"url": "http://www.openwall.com/lists/oss-security/2021/09/14/2", "domaine": "www.openwall.com", "editeur": "Openwall (oss-security)", "etiquettes": ["Liste de diffusion", "Correctif", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/", "domaine": "lists.fedoraproject.org", "editeur": "Fedora", "etiquettes": ["Liste de diffusion", "Notes de version"], "nom": "", "lien": true, "casse": false}, {"url": 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"", "etiquettes": ["Notes de version"], "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://seclists.org/fulldisclosure/2021/Feb/42", "domaine": "seclists.org", "editeur": "", "etiquettes": ["Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "http://www.openwall.com/lists/oss-security/2021/01/27/1", "domaine": "www.openwall.com", "editeur": "Openwall (oss-security)", "etiquettes": ["Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "http://www.openwall.com/lists/oss-security/2021/01/27/2", "domaine": "www.openwall.com", "editeur": "Openwall (oss-security)", "etiquettes": ["Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://kc.mcafee.com/corporate/index?page=content&id=SB10348", "domaine": "kc.mcafee.com", "editeur": "", "etiquettes": ["Lien signalé cassé", "Avis d'un tiers"], "nom": "", "lien": true, "casse": true}, {"url": "https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html", "domaine": "lists.debian.org", "editeur": "Debian", "etiquettes": ["Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://security.gentoo.org/glsa/202101-33", "domaine": "security.gentoo.org", "editeur": "Gentoo", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://security.netapp.com/advisory/ntap-20210128-0001/", "domaine": "security.netapp.com", "editeur": "NetApp", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://security.netapp.com/advisory/ntap-20210128-0002/", "domaine": "security.netapp.com", "editeur": "NetApp", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://support.apple.com/kb/HT212177", "domaine": "support.apple.com", "editeur": "Apple", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM", "domaine": "tools.cisco.com", "editeur": "Cisco", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability", "domaine": "www.beyondtrust.com", "editeur": "", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.debian.org/security/2021/dsa-4839", "domaine": "www.debian.org", "editeur": "Debian", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.kb.cert.org/vuls/id/794544", "domaine": "www.kb.cert.org", "editeur": "CERT/CC", "etiquettes": ["Avis d'un tiers", "Ressource gouvernementale américaine"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.synology.com/security/advisory/Synology_SA_21_02", "domaine": "www.synology.com", "editeur": "Synology", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}, {"cle": "analyse", "titre": "Analyses, tickets et discussions", "explication": "Pour comprendre le défaut : description technique, ticket, liste de diffusion.", "items": [{"url": "http://www.openwall.com/lists/oss-security/2024/01/30/8", "domaine": "www.openwall.com", "editeur": "Openwall (oss-security)", "etiquettes": ["Liste de diffusion"], "nom": "", "lien": true, "casse": false}]}, {"cle": "exploit", "titre": "Codes d'exploitation référencés", "explication": "Les sources signalent un code d'exploitation public. Par prudence, CyberAlert affiche le site qui l'héberge sans lien direct : l'information utile ici est son existence, qui rend la faille plus facile à attaquer.", "items": [{"url": "http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": false, "casse": false}, {"url": "http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": false, "casse": false}, {"url": "http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html", "domaine": "packetstormsecurity.com", "editeur": "Packet Storm", "etiquettes": ["Code d'exploitation", "Avis d'un tiers", "Base de 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"etiquettes": ["Code d'exploitation", "Liste de diffusion", "Avis d'un tiers"], "nom": "", "lien": false, "casse": false}, {"url": "https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156", "domaine": "www.vicarius.io", "editeur": "", "etiquettes": ["Code d'exploitation", "Avis d'un tiers"], "nom": "", "lien": false, "casse": false}]}], "liens_correction": [{"url": "http://www.openwall.com/lists/oss-security/2021/09/14/2", "domaine": "www.openwall.com", "editeur": "Openwall (oss-security)", "etiquettes": ["Liste de diffusion", "Correctif", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/", "domaine": "lists.fedoraproject.org", "editeur": "Fedora", "etiquettes": ["Liste de diffusion", "Notes de version"], "nom": "", "lien": true, "casse": false, 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versions corrigées"}, {"url": "https://www.oracle.com/security-alerts/cpuoct2021.html", "domaine": "www.oracle.com", "editeur": "Oracle", "etiquettes": ["Correctif", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "https://www.sudo.ws/stable.html#1.9.5p2", "domaine": "www.sudo.ws", "editeur": "", "etiquettes": ["Notes de version"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}], "nb_exploits": 12, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "metriques": [{"code": "AV", "nom": "Vecteur d'attaque", "valeur": "Local (accès à la machine)", "brut": "L", "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:L/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-193", "nom": "", "url": "https://cwe.mitre.org/data/definitions/193.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": "2025-02-03", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2021-01-15", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2021-01-26", "libelle": "Publication de la vulnérabilité", "qui": "mitre"}, {"date": "2022-04-06", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2022-04-27", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2025-02-03", "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-2021-3156", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2021-3156", "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-2021-3156", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2021-3156", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2021-3156", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2021-3156", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Sudo Project", "product": "Sudo", "ranges": ["de 1.8.2 à 1.8.32 (exclue)", "de 1.9.0 à 1.9.5 (exclue)", "1.9.5"], "first_unaffected": ["1.8.32", "1.9.5"], "source": "NVD"}, {"vendor": "Fedoraproject", "product": "Fedora", "ranges": ["32", "33"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Debian", "product": "Debian Linux", "ranges": ["9.0", "10.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Active Iq Unified Manager", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Cloud Backup", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Hci Management Node", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Oncommand Unified Manager Core Package", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Ontap Select Deploy Administration Utility", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Ontap Tools", "ranges": ["9"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Netapp", "product": "Solidfire", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Mcafee", "product": "Web Gateway", "ranges": ["8.2.17", "9.2.8", "10.0.4"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Diskstation Manager Unified Controller", "ranges": ["3.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Diskstation Manager", "ranges": ["6.2"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "Skynas Firmware", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Synology", "product": "vs960hd Firmware", "ranges": ["toutes versions (selon NVD)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Beyondtrust", "product": "Privilege Management For Mac", "ranges": ["avant 21.1.1"], "first_unaffected": ["21.1.1"], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Compact Workstation 3 Firmware", "ranges": ["310"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros es400 Firmware", "ranges": ["de 400 à 410 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Kitchen Display System Firmware", "ranges": ["210"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Workstation 5a Firmware", "ranges": ["5a"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Micros Workstation 6 Firmware", "ranges": ["de 610 à 655 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Oracle", "product": "Communications Performance Intelligence Center", "ranges": ["de 10.3.0.0.0 à 10.3.0.2.1 (incluse)"], "first_unaffected": [], "source": "NVD"}, {"vendor": "n/a", "product": "n/a", "ranges": ["n/a"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://nvd.nist.gov/vuln/detail/CVE-2021-3156"]}, "consulted_at": "2026-10-07T06:52:39.545595+00:00"}