{"resultsPerPage":1,"startIndex":0,"totalResults":1,"format":"NVD_CVE","version":"2.0","timestamp":"2026-06-12T11:49:35.889","vulnerabilities":[{"cve":{"id":"CVE-2025-24356","sourceIdentifier":"security-advisories@github.com","published":"2025-01-27T18:15:41.347","lastModified":"2025-08-27T02:15:55.160","vulnStatus":"Analyzed","cveTags":[],"descriptions":[{"lang":"en","value":"fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from an unknown IP address/port combination, fastd will assume that one of its connected peers has moved to a new address and initiate a reconnect by sending a handshake packet. This \"fast reconnect\" avoids having to wait for a session timeout (up to ~90s) until a new connection is established. Even a 1-byte UDP packet just containing the fastd packet type header can trigger a much larger handshake packet (~150 bytes of UDP payload). Including IPv4 and UDP headers, the resulting amplification factor is roughly 12-13. By sending data packets with a spoofed source address to fastd instances reachable on the internet, this amplification of UDP traffic might be used to facilitate a Distributed Denial of Service attack. This vulnerability is fixed in v23."},{"lang":"es","value":"fastd es una VPN daemon que tuneliza paquetes IP y tramas Ethernet sobre UDP. Al recibir un paquete de datos de una combinación desconocida de dirección IP/puerto, fastd asumirá que uno de sus pares conectados se ha mudado a una nueva dirección e iniciará una reconexión enviando un paquete handshake. Esta \"reconexión rápida\" evita tener que esperar a que se agote el tiempo de espera de la sesión (hasta ~90 s) hasta que se establezca una nueva conexión. Incluso un paquete UDP de 1 byte que solo contenga el encabezado de tipo de paquete fastd puede activar un paquete handshakee mucho más grande (~150 bytes de UDP payload). incluida IPv4 y encabezados UDP, el factor de amplificación resultante es aproximadamente 12-13. Al enviar paquetes de datos con una dirección de origen falsificada a instancias de fastd accesibles en Internet, esta amplificación del tráfico UDP podría usarse para facilitar un ataque de denegación de servicio distribuido. Esta vulnerabilidad se corrigió en la v23."}],"metrics":{"cvssMetricV40":[{"source":"security-advisories@github.com","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","baseScore":6.9,"baseSeverity":"MEDIUM","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE","vulnAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"LOW","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}]},"weaknesses":[{"source":"security-advisories@github.com","type":"Secondary","description":[{"lang":"en","value":"CWE-405"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:fastd_project:fastd:*:*:*:*:*:*:*:*","versionEndExcluding":"23.0","matchCriteriaId":"13F48C42-FD6C-4BB0-ACB5-56235C3E04B1"}]}]}],"references":[{"url":"https://github.com/neocturne/fastd/commit/1f233bee76b722c0b3f9024f2c39c72e9f7e5843","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/3940150e801d0c91460491bec32cbcc5bbc89d5f","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/5f63fcfc18ae9cad023fa463b152d5e14192b5a8","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/9df7e516378441d2d17b89f9db5c27c8312d8f12","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/c1a07b3f2b9066c3713c68547da700b85d60f4f7","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/ce1b79b12dbfa796743b5f3a50789ade965b7023","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/commit/d03a0a17347efb5293e42fde7d982781e90f14ef","source":"security-advisories@github.com","tags":["Patch"]},{"url":"https://github.com/neocturne/fastd/security/advisories/GHSA-pggg-vpfv-4rcv","source":"security-advisories@github.com","tags":["Mitigation","Patch","Vendor Advisory"]}]}}]}