{"item": {"cve_id": "CVE-2010-4344", "ghsa_id": "", "osv_id": "", "title": "CVE-2010-4344", "description": "Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session that includes two MAIL commands in conjunction with a large message containing crafted headers, leading to improper rejection logging.", "published_at": "2010-12-14T16:00:04.163", "modified_at": "2026-06-16T23:24:36.107", "vendor": "Exim", "product": "Exim", "affected_versions": ["n/a"], "fixed_versions": [], "cvss_score": 9.8, "cvss_version": "3.1", "cvss_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "severity": "CRITICAL", "epss_score": 0.71706, "epss_percentile": 0.9941, "epss_date": "2026-10-08", "is_kev": true, "kev_date": "2022-03-25", "kev_due_date": "2022-04-15", "kev_action": "Apply updates per vendor instructions.", "cwe_ids": ["CWE-787"], "attack_vector": "NETWORK", "attack_complexity": "LOW", "privileges_required": "NONE", "user_interaction": "NONE", "references": ["ftp://ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70", "http://atmail.com/blog/2010/atmail-6204-now-available/", "http://bugs.exim.org/show_bug.cgi?id=787", "http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b", "http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html", "http://lists.opensuse.org/opensuse-security-announce/2010-12/msg00003.html", "http://openwall.com/lists/oss-security/2010/12/10/1", "http://secunia.com/advisories/40019", "http://secunia.com/advisories/42576", "http://secunia.com/advisories/42586", "http://secunia.com/advisories/42587", "http://secunia.com/advisories/42589", "http://www.exim.org/lurker/message/20101207.215955.bb32d4f2.en.html", "http://www.securitytracker.com/id?1024858", "http://www.redhat.com/support/errata/RHSA-2010-0970.html", "http://www.vupen.com/english/advisories/2010/3186", "http://www.securityfocus.com/bid/45308", "http://www.metasploit.com/modules/exploit/unix/smtp/exim4_string_format", "https://bugzilla.redhat.com/show_bug.cgi?id=661756", "http://www.vupen.com/english/advisories/2010/3172", "http://www.kb.cert.org/vuls/id/682457", "http://www.vupen.com/english/advisories/2010/3181", "http://www.vupen.com/english/advisories/2010/3317", "http://www.ubuntu.com/usn/USN-1032-1", "http://www.cpanel.net/2010/12/exim-remote-memory-corruption-vulnerability-notification-cve-2010-4344.html", "http://www.osvdb.org/69685", "http://www.securityfocus.com/archive/1/515172/100/0/threaded", "http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/", "http://www.vupen.com/english/advisories/2010/3246", "http://www.vupen.com/english/advisories/2010/3204", "http://www.debian.org/security/2010/dsa-2131", "http://www.vupen.com/english/advisories/2010/3171", "http://www.openwall.com/lists/oss-security/2021/05/04/7", "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344"], "source_urls": {"NVD": "https://nvd.nist.gov/vuln/detail/CVE-2010-4344", "CVE.org": "https://www.cve.org/CVERecord?id=CVE-2010-4344", "CISA": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344", "FIRST EPSS": "https://api.first.org/data/v1/epss?cve=CVE-2010-4344"}, "patch_available": null, "workaround_available": null, "sources": ["NVD", "CVE.org", "CISA", "FIRST EPSS"], "reference_items": [{"url": "ftp://ftp.exim.org/pub/exim/ChangeLogs/ChangeLog-4.70", "tags": ["Broken Link"], "source": "NVD", "name": ""}, {"url": "http://atmail.com/blog/2010/atmail-6204-now-available/", "tags": ["Broken Link"], "source": "NVD", "name": ""}, {"url": "http://bugs.exim.org/show_bug.cgi?id=787", "tags": ["Issue Tracking", "Patch"], "source": "NVD", "name": ""}, {"url": "http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b", "tags": ["Mailing List", "Patch"], "source": "NVD", "name": ""}, {"url": 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""}, {"url": "http://www.securityfocus.com/archive/1/515172/100/0/threaded", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry", "mailing-list", "x_refsource_BUGTRAQ", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.securityfocus.com/bid/45308", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry", "vdb-entry", "x_refsource_BID", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.securitytracker.com/id?1024858", "tags": ["Broken Link", "Third Party Advisory", "VDB Entry", "vdb-entry", "x_refsource_SECTRACK", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.theregister.co.uk/2010/12/11/exim_code_execution_peril/", "tags": ["Press/Media Coverage", "x_refsource_MISC", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.ubuntu.com/usn/USN-1032-1", "tags": ["Third Party Advisory", "vendor-advisory", "x_refsource_UBUNTU", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.vupen.com/english/advisories/2010/3171", "tags": ["Broken Link", "Vendor Advisory", "vdb-entry", "x_refsource_VUPEN", "x_transferred"], "source": "NVD", "name": ""}, {"url": "http://www.vupen.com/english/advisories/2010/3172", "tags": ["Broken Link", "Vendor Advisory", "vdb-entry", "x_refsource_VUPEN", "x_transferred"], "source": "NVD", "name": ""}, {"url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344", "tags": ["government-resource"], "source": "CVE.org", "name": ""}], "cvss_v4_score": null, "cvss_v4_vector": "", "cvss_v4_severity": "", "nvd_status": "Analyzed", "cna": "redhat", "date_reserved": "2010-11-30T00:00:00.000Z", "ssvc": {"options": {"Exploitation": "active", "Automatable": "yes", "Technical Impact": "total"}, "version": "2.0.3", "timestamp": "2025-02-07T13:23:46.584337Z", "role": "CISA Coordinator"}, "affected_products": [{"vendor": "Exim", "product": "Exim", "ranges": ["avant 4.70"], "first_unaffected": ["4.70"], "source": "NVD"}, {"vendor": "Opensuse", "product": "Opensuse", "ranges": ["11.1", "11.2", "11.3"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Debian", "product": "Debian Linux", "ranges": ["5.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Canonical", "product": "Ubuntu Linux", "ranges": ["6.06", "8.04", "9.10"], "first_unaffected": [], "source": "NVD"}, {"vendor": "n/a", "product": "n/a", "ranges": ["n/a"], "first_unaffected": [], "source": "CVE.org"}], "kev_name": "Exim Heap-Based Buffer Overflow Vulnerability", "kev_short_description": "Heap-based buffer overflow in the string_vformat function in string.c in Exim before 4.70 allows remote attackers to execute arbitrary code via an SMTP session.", "kev_ransomware": "Unknown", "kev_notes": "https://nvd.nist.gov/vuln/detail/CVE-2010-4344", "kev_cwes": ["CWE-119"], "wordfence_id": "", "mentions_sources": [], "version_match": "unknown", "risk_score": 76, "risk_class": "Critique", "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), sans authentification préalable, affecter la confidentialité des données, l'intégrité du système et la disponibilité du service.", "basis": "CVSS 3.1"}, "mechanism": "Écriture hors limites mémoire : l'application écrit au-delà d'une zone prévue, pouvant provoquer un plantage ou un comportement anormal.", "mitigation": {"correction": {"available": true, "text": "Mettre à jour : selon les sources, ne sont plus concernées les versions à partir de Exim 4.70."}, "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://bugs.exim.org/show_bug.cgi?id=787", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "", "domaine": "bugs.exim.org"}, {"url": "http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "", "domaine": "git.exim.org"}, {"url": "http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html", "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées", "editeur": "", "domaine": "lists.exim.org"}]}, "plain": {"verdict": "now", "verdict_label": "Exploité par des attaquants · à traiter aujourd'hui", "verdict_css": "now", "verdict_rank": 0, "headline": "Le logiciel peut écrire hors de la zone mémoire prévue, jusqu'au plantage, à distance et sans compte", "headline_is_derived": true, "action": "Mettre à jour vers Exim 4.70 ou plus récent, version publiée comme non concernée.", "action_kind": "update", "concerned": [{"version": "Exim 4.70 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 Exim 4.70 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 Exim 4.70 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 : 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": "Exim 4.70 (non concernée selon les sources)", "affected_label": "n/a"}, "severity_display": "Critique", "cvss_is_legacy": false, "risk_score_computable": true, "identifier": "CVE-2010-4344", "severity_fr": "Critique", "epss_pct": 71.7, "source_records": [{"source": "NVD", "label": "NVD, NIST", "date_label": "Publié dans la base", "date": "2010-12-14", "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-4344"}, {"source": "CVE.org", "label": "CVE.org, programme CVE", "date_label": "Publié par l'organisme CNA", "date": "2010-12-14", "url": "https://www.cve.org/CVERecord?id=CVE-2010-4344"}, {"source": "CISA", "label": "CISA KEV", "date_label": "Ajout au catalogue", "date": "2022-03-25", "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2010-4344"}, {"source": "FIRST EPSS", "label": "FIRST EPSS", "date_label": "Score daté du", "date": "2026-10-08", "url": "https://api.first.org/data/v1/epss?cve=CVE-2010-4344"}], "exploit_public": true, "reseau_sans_auth": true, "exposition": "À distance, sans compte et sans 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": "bon", "reponse": "Oui : 4.70", "source": "Versions publiées comme non concernées"}, {"question": "Comment l'attaquer ?", "ton": "alerte", "reponse": "À distance, sans compte et sans action d'un utilisateur", "source": "Vecteur CVSS publié"}, {"question": "Risque d'exploitation", "ton": "alerte", "reponse": "71,7 % sur 30 jours", "source": "Plus probable que 99 % 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://bugs.exim.org/show_bug.cgi?id=787", "domaine": "bugs.exim.org", "editeur": "", "etiquettes": ["Suivi de ticket", "Correctif"], "nom": "", "lien": true, "casse": false}, {"url": "http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b", "domaine": "git.exim.org", "editeur": "", "etiquettes": ["Liste de diffusion", "Correctif"], "nom": "", "lien": true, "casse": false}, {"url": "http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html", "domaine": "lists.exim.org", "editeur": "", "etiquettes": ["Liste de diffusion", "Correctif"], "nom": "", "lien": true, "casse": false}]}, {"cle": 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"nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "http://git.exim.org/exim.git/commit/24c929a27415c7cfc7126c47e4cad39acf3efa6b", "domaine": "git.exim.org", "editeur": "", "etiquettes": ["Liste de diffusion", "Correctif"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}, {"url": "http://lists.exim.org/lurker/message/20101210.164935.385e04d0.en.html", "domaine": "lists.exim.org", "editeur": "", "etiquettes": ["Liste de diffusion", "Correctif"], "nom": "", "lien": true, "casse": false, "groupe": "correctif", "groupe_titre": "Correctifs et versions corrigées"}], "nb_exploits": 4, "cvss": {"version": "3.1", "vecteur": "CVSS:3.1/AV:N/AC:L/PR:N/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": "Aucun (pas de compte)", "brut": "N", "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:N/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-787", "nom": "Out-of-bounds Write", "url": "https://cwe.mitre.org/data/definitions/787.html"}], "owasp": [], "ssvc": {"lignes": [{"nom": "Exploitation", "valeur": "Exploitation active constatée", "brut": "active"}, {"nom": "Automatisable", "valeur": "Oui : l'attaque peut être enchaînée sans intervention humaine", "brut": "yes"}, {"nom": "Impact technique", "valeur": "Total : contrôle complet du composant ou de ses informations", "brut": "total"}], "version": "2.0.3", "date": "2025-02-07", "role": "CISA Coordinator", "url": "https://www.cisa.gov/stakeholder-specific-vulnerability-categorization-ssvc"}, "chronologie": [{"date": "2010-11-30", "libelle": "Identifiant réservé", "qui": "Programme CVE"}, {"date": "2010-12-14", "libelle": "Publication de la vulnérabilité", "qui": "redhat"}, {"date": "2022-03-25", "libelle": "Ajout au catalogue des failles exploitées", "qui": "CISA"}, {"date": "2022-04-15", "libelle": "Échéance de correction fixée par la CISA", "qui": "CISA"}, {"date": "2025-02-07", "libelle": "Décision SSVC publiée", "qui": "CISA"}, {"date": "2026-06-16", "libelle": "Dernière mise à jour de la fiche source", "qui": "Source"}, {"date": "2026-10-08", "libelle": "Calcul du score EPSS affiché", "qui": "FIRST"}], "liens_officiels": [{"nom": "NVD (NIST)", "url": "https://nvd.nist.gov/vuln/detail/CVE-2010-4344", "description": "Fiche de référence : CVSS, CPE, références étiquetées."}, {"nom": "CVE.org", "url": "https://www.cve.org/CVERecord?id=CVE-2010-4344", "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-2010-4344", "description": "Entrée du catalogue des failles activement exploitées."}, {"nom": "FIRST EPSS", "url": "https://api.first.org/data/v1/epss?cve=CVE-2010-4344", "description": "Score de probabilité d'exploitation du jour."}, {"nom": "OSV.dev", "url": "https://osv.dev/vulnerability/CVE-2010-4344", "description": "Paquets open source concernés et versions corrigées."}, {"nom": "GitHub Advisory Database", "url": "https://github.com/advisories?query=CVE-2010-4344", "description": "Avis de sécurité des dépendances logicielles."}], "produits": [{"vendor": "Exim", "product": "Exim", "ranges": ["avant 4.70"], "first_unaffected": ["4.70"], "source": "NVD"}, {"vendor": "Opensuse", "product": "Opensuse", "ranges": ["11.1", "11.2", "11.3"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Debian", "product": "Debian Linux", "ranges": ["5.0"], "first_unaffected": [], "source": "NVD"}, {"vendor": "Canonical", "product": "Ubuntu Linux", "ranges": ["6.06", "8.04", "9.10"], "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-2010-4344"]}, "consulted_at": "2026-10-09T01:05:47.866748+00:00"}