{"item": {"cve_id": "CVE-2017-1000253", "ghsa_id": "", "osv_id": "", "title": "CVE-2017-1000253", "description": "Linux distributions that have not patched their long-term kernels with https://git.kernel.org/linus/a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (committed on April 14, 2015). This kernel vulnerability was fixed in April 2015 by commit a87938b2e246b81b4fb713edb371a9fa3c5c3c86 (backported to Linux 3.10.77 in May 2015), but it was not recognized as a security threat. With CONFIG_ARCH_BINFMT_ELF_RANDOMIZE_PIE enabled, and a normal top-down address allocation strategy, load_elf_binary() will attempt to map a PIE binary into an address range immediately below mm->mmap_base. Unfortunately, load_elf_ binary() does not take account of the need to allocate sufficient space for the entire binary which means that, while the first PT_LOAD segment is mapped below mm->mmap_base, the subsequent PT_LOAD segment(s) end up being mapped above mm->mmap_base into the are that is supposed to be the \"gap\" between the stack and the binary.", "published_at": "2017-10-05T01:29:04.790", "modified_at": "2026-06-17T00:58:59.460", "vendor": "Centos", "product": "Centos", "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": 0.10695, "epss_percentile": 0.95702, "epss_date": "2026-10-06", "is_kev": true, "kev_date": "2024-09-09", "kev_due_date": "2024-09-30", "kev_action": "Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.", "cwe_ids": ["CWE-119"], "attack_vector": "LOCAL", "attack_complexity": "LOW", "privileges_required": "LOW", "user_interaction": "NONE", "references": ["http://www.securityfocus.com/bid/101010", "http://www.securitytracker.com/id/1039434", "https://access.redhat.com/errata/RHSA-2017:2793", "https://access.redhat.com/errata/RHSA-2017:2794", "https://access.redhat.com/errata/RHSA-2017:2795", "https://access.redhat.com/errata/RHSA-2017:2796", "https://access.redhat.com/errata/RHSA-2017:2797", "https://access.redhat.com/errata/RHSA-2017:2798", "https://access.redhat.com/errata/RHSA-2017:2799", "https://access.redhat.com/errata/RHSA-2017:2800", "https://access.redhat.com/errata/RHSA-2017:2801", "https://access.redhat.com/errata/RHSA-2017:2802", "https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000253", "CVE.org": 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""}, {"url": "https://access.redhat.com/errata/RHSA-2017:2802", "tags": ["Third Party Advisory", "vendor-advisory", "x_refsource_REDHAT", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt", "tags": ["Patch", "Third Party Advisory", "x_refsource_MISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253", "tags": ["US Government Resource", "government-resource"], "source": "NVD", "name": ""}], "cvss_v4_score": null, "cvss_v4_vector": "", "cvss_v4_severity": "", "nvd_status": "Analyzed", "cna": "mitre", "date_reserved": "2017-10-03T00:00:00.000Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "no", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2024-09-10T03:55:15.715774Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Centos", "product": "Centos", "ranges": ["6.0", "6.1", "6.2", "6.3", "6.4", "6.5", "6.6", "6.7", "6.8", "6.9", "7.1406", "7.1503", "7.1511", "7.1611"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux", "ranges": ["6.0", "6.1", "6.2", "6.3", "6.4", "6.5", "6.6", "6.7", "6.8", "6.9", "7.0", "7.1", "7.2", "7.3"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Linux", "product": "Linux Kernel", "ranges": ["de 2.6.25 à 3.2.70 (exclue)", "de 3.3 à 3.4.109 (exclue)", "de 3.5 à 3.10.77 (exclue)", "de 3.11 à 3.12.43 (exclue)", "de 3.13 à 3.14.41 (exclue)", "de 3.15 à 3.16.35 (exclue)", "de 3.17 à 3.18.14 (exclue)", "de 3.19 à 3.19.7 (exclue)", "de 4.0 à 4.0.2 (exclue)"], "first_unaffected": ["3.2.70", "3.4.109", "3.10.77", "3.12.43", "3.14.41", "3.16.35", "3.18.14", "3.19.7", "4.0.2"], "source": "NVD"}, {"vendor": "n/a", "product": "n/a", "ranges": ["n/a"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Linux Kernel PIE Stack Buffer Corruption Vulnerability ", "kev_short_description": "Linux kernel contains a position-independent executable (PIE) stack buffer corruption vulnerability in load_elf_ binary() that allows a local attacker to escalate privileges. ", "kev_ransomware": "Known", "kev_notes": "This vulnerability affects a common open-source component, third-party library, or a protocol used by different products. For more information, please see: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a87938b2e246b81b4fb713edb371a9fa3c5c3c86; https://nvd.nist.gov/vuln/detail/CVE-2017-1000253", "kev_cwes": ["CWE-119"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 58, "risk_class": "Important", "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": "Gestion incorrecte des limites d'un tampon mémoire.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77, Linux Kernel 3.12.43, Linux Kernel 3.14.41."}, "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 mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.", "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://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "", "domaine": "www.qualys.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 Centos, depuis l'appareil lui-même", "headline_is_derived": true, "action": "Mettre à jour vers Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77 ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77 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 Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77 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 Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77 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": "Linux Kernel 3.2.70, Linux Kernel 3.4.109, Linux Kernel 3.10.77 (non concernée selon les sources)", "affected_label": "n/a"}, "severity_display": "Élevée", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2017-1000253", "severity_fr": "Élevée", "epss_pct": 10.7, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2017-10-05", "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-1000253"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2017-10-05", "url": "https://www.cve.org/CVERecord?id=CVE-2017-1000253"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2024-09-09", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253"}, {"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-2017-1000253"}], "exploit_public": false, "reseau_sans_auth": false, "exposition": "Avec un accès à la machine", "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": "bon", "reponse": "Oui : 3.2.70, 3.4.109, 3.10.77, 3.12.43…", "source": "Versions publiées comme non concernées"}, {"question": "Comment l'attaquer ?", "ton": "neutre", "reponse": "Avec un accès à la machine", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "10,7 % sur 30 jours", "source": "Plus probable que 96 % 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": "https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt", "domaine": "www.qualys.com", "editeur": "", "etiquettes": ["Correctif", "Avis d'un tiers"], "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/101010", "domaine": "www.securityfocus.com", "editeur": "", "etiquettes": ["Avis d'un tiers", "Base de vulnérabilités"], "nom": "", "lien": true, "casse": false}, 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"domaine": "access.redhat.com", "editeur": "Red Hat", "etiquettes": ["Avis d'un tiers"], "nom": "", "lien": true, "casse": false}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000253", "domaine": "www.cisa.gov", "editeur": "CISA", "etiquettes": ["Ressource gouvernementale américaine", "Ressource gouvernementale"], "nom": "", "lien": true, "casse": false}]}], "liens_correction": [{"url": "https://www.qualys.com/2017/09/26/cve-2017-1000253/cve-2017-1000253.txt", "domaine": "www.qualys.com", "editeur": "", "etiquettes": ["Correctif", "Avis d'un tiers"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}], "nb_exploits": 0, "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-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": "2024-09-10", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2017-10-03", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2017-10-05", "libelle": "Publication de la vulnérabilité", "qui": "mitre"}, {"date": "2024-09-09", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2024-09-10", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2024-09-30", "libelle": "Échéance de correction fixée par la CISA", "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-2017-1000253", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2017-1000253", "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-2017-1000253", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2017-1000253", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2017-1000253", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2017-1000253", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Centos", "product": "Centos", "ranges": ["6.0", "6.1", "6.2", "6.3", "6.4", "6.5", "6.6", "6.7", "6.8", "6.9", "7.1406", "7.1503", "7.1511", "7.1611"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Redhat", "product": "Enterprise Linux", "ranges": ["6.0", "6.1", "6.2", "6.3", "6.4", "6.5", "6.6", "6.7", "6.8", "6.9", "7.0", "7.1", "7.2", "7.3"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Linux", "product": "Linux Kernel", "ranges": ["de 2.6.25 à 3.2.70 (exclue)", "de 3.3 à 3.4.109 (exclue)", "de 3.5 à 3.10.77 (exclue)", "de 3.11 à 3.12.43 (exclue)", "de 3.13 à 3.14.41 (exclue)", "de 3.15 à 3.16.35 (exclue)", "de 3.17 à 3.18.14 (exclue)", "de 3.19 à 3.19.7 (exclue)", "de 4.0 à 4.0.2 (exclue)"], "first_unaffected": ["3.2.70", "3.4.109", "3.10.77", "3.12.43", "3.14.41", "3.16.35", "3.18.14", "3.19.7", "4.0.2"], "source": "NVD"}, {"vendor": "n/a", "product": "n/a", "ranges": ["n/a"], "first_unaffected": [], "source": "CVE.org"}], "notes_kev": ["https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a87938b2e246b81b4fb713edb371a9fa3c5c3c86", "https://nvd.nist.gov/vuln/detail/CVE-2017-1000253"]}, "consulted_at": "2026-10-07T09:17:20.043202+00:00"}