CVE-2025-46836

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Inn versions up to and including 2.10, the Linux network utilities (like ifconfig) from the net-tools package do not properly validate the structure of /proc files when showing interfaces. `get_name()` in `interface.c` copies interface labels from `/proc/net/dev` into a fixed 16-byte stack buffer without bounds checking, leading to possible arbitrary code execution or crash. The known attack path does not require privilege but also does not provide privilege escalation in this scenario. A patch is available and expected to be part of version 2.20."}, {"lang": "es", "value": "net-tools es una colecci\u00f3n de programas que forman la base de la distribuci\u00f3n de redes NET-3 para el sistema operativo Linux. En versiones anteriores a la 2.10, las utilidades de red de Linux (como ifconfig) del paquete net-tools no validan correctamente la estructura de los archivos /proc al mostrar interfaces. `get_name()` en `interface.c` copia las etiquetas de interfaz de `/proc/net/dev` a un b\u00fafer de pila fijo de 16 bytes sin comprobar los l\u00edmites, lo que puede provocar la ejecuci\u00f3n de c\u00f3digo arbitrario o un fallo. La ruta de ataque conocida no requiere privilegios, pero tampoco permite la escalada de privilegios en este escenario. Hay un parche disponible y se espera que forme parte de la versi\u00f3n 2.20."}], "id": "CVE-2025-46836", "lastModified": "2026-06-17T09:27:00.640", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 6.6, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.7, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-46836", "options": [{"exploitation": "poc"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2025-05-15T15:34:45.640215Z", "version": "2.0.3"}}]}, "published": "2025-05-14T23:15:48.073", "references": [{"source": "security-advisories@github.com", "url": "https://github.com/ecki/net-tools/commit/7a8f42fb20013a1493d8cae1c43436f85e656f2d"}, {"source": "security-advisories@github.com", "url": "https://github.com/ecki/net-tools/security/advisories/GHSA-pfwf-h6m3-63wf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2025/05/msg00053.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-082556.html"}, {"source": "0b142b55-0307-4c5a-b3c9-f314f3fb7c5e", "url": "https://cert-portal.siemens.com/productcert/html/ssa-577017.html"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Deferred", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}, {"lang": "en", "value": "CWE-121"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "net-tools: net-tools Stack Buffer Overflow", "id": "2366370", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2366370"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.6", "cvss3_scoring_vector": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H", "status": "draft"}, "cwe": "(CWE-121|CWE-20)", "details": ["net-tools is a collection of programs that form the base set of the NET-3 networking distribution for the Linux operating system. Inn versions up to and including 2.10, the Linux network utilities (like ifconfig) from the net-tools package do not properly validate the structure of /proc files when showing interfaces. `get_name()` in `interface.c` copies interface labels from `/proc/net/dev` into a fixed 16-byte stack buffer without bounds checking, leading to possible arbitrary code execution or crash. The known attack path does not require privilege but also does not provide privilege escalation in this scenario. A patch is available and expected to be part of version 2.20.", "A flaw was found in net-tools. This vulnerability allows arbitrary code execution or a crash via improper handling of interface labels from `/proc/net/dev`."], "mitigation": {"lang": "en:us", "value": "To mitigate this vulnerability, disable unprivileged user-namespaces (sysctl kernel.unprivileged_userns_clone=0) to remove the easiest non-privileged trigger path."}, "name": "CVE-2025-46836", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "net-tools", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "net-tools", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "net-tools", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "net-tools", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "net-tools", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2025-05-14T22:59:19Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-46836\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-46836\nhttps://github.com/ecki/net-tools/commit/7a8f42fb20013a1493d8cae1c43436f85e656f2d\nhttps://github.com/ecki/net-tools/security/advisories/GHSA-pfwf-h6m3-63wf"], "threat_severity": "Moderate"}

{}