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Media

Jenkins vulnerable to UDP amplification reflection attack

  • Publicada: 24.05.2022
  • Actualizado: 11.10.2026 11:22

Jenkins 2.218 and earlier, LTS 2.204.1 and earlier supports two network discovery services (UDP multicast/broadcast and DNS multicast) by default.

The UDP multicast/broadcast service can be used in an amplification reflection attack, as very few bytes sent to the respective endpoint result in much larger responses: A single byte request to this service would respond with more than 100 bytes of Jenkins metadata which could be used in a DDoS attack on a Jenkins controller. Within the same network, spoofed UDP packets could also be sent to make two Jenkins controllers go into an infinite loop of replies to one another, thus causing a denial of service.

Jenkins 2.219, LTS 2.204.2 now disables both UDP multicast/broadcast and DNS multicast by default.

Administrators that need these features can re-enable them again by setting the system property hudson.DNSMultiCast.disabled to false (for DNS multicast) or the system property hudson.udp to 33848, or another port (for UDP broadcast/multicast). These are the same system properties that controlled whether these features were enabled in the past, so any instances explicitly enabling these features by setting these system properties will continue to have them enabled.

Software afectado

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PlataformaPaqueteVersiones vulnerablesCorregida en
Java / Kotlin (Maven) org.jenkins-ci.main:jenkins-core < 2.204.2, >= 2.205, < 2.219 2.204.2, 2.219

Referencias

Puntuación CVSS 5.8/10
Vector CVSS
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
Debilidad (CWE)
CWE-406
Plataforma
Java / Kotlin (Maven)
Paquete
org.jenkins-ci.main:jenkins-core
Publicada
24.05.2022
Actualizado
11.10.2026 11:22

Fuentes y licencias

OSV / GitHub Advisory Database - GHSA-gpxv-776p-7gc7 - CC BY 4.0

Historial de vulnerabilidades: org.jenkins-ci.main:jenkins-core

Todas las vulnerabilidades publicadas de este paquete (Java / Kotlin (Maven)), de la más reciente a la más antigua. Muestra si es un fallo aislado o un paquete que hay que vigilar.

Todas (259) en el archivo
Entradas en total
259
Primera → última
01.2022 06.2026
Sin corrección
1
Explotada en ataques
4

Distribución por gravedad

  • Crítica 19
  • Alta 62
  • Media 158
  • Baja 20

Divulgaciones por año

Gravedad:
  1. Jenkins vulnerable to UDP amplification reflection attack esta entrada
    Media · 5.8 CVE-2020-2100 < 2.204.2, >= 2.205, < 2.219 2.204.2, 2.219
  2. Jenkins arbitrary type deserialization from attacker-controlled config.xml allows remote code execution and user impersonation
    Alta · 8.8 CVE-2026-53435 < 2.555.3, >= 2.556, < 2.568 2.555.3, 2.568
  3. Jenkins: Stored XSS vulnerability in node offline cause description
    Alta · 8.0 CVE-2026-53441 >= 2.483, < 2.568 2.568
  4. Jenkins has a link following vulnerability allows arbitrary file creation
    Alta · 8.8 CVE-2026-33001 < 2.555 2.555
  5. Jenkins has a DNS rebinding vulnerability in WebSocket CLI origin validation
    Alta · 7.5 CVE-2026-33002 >= 2.442, < 2.555 2.555
  6. Jenkins has a stored XSS vulnerability in node offline cause description
    Alta · 8.0 CVE-2026-27099 >= 2.542, < 2.551, >= 2.483, < 2.541.2 2.551, 2.541.2
  7. Jenkins has a Denial of service vulnerability in HTTP-based CLI
    Alta · 7.5 CVE-2025-67635 >= 2.529, < 2.541, < 2.528.3 2.541, 2.528.3
  8. Jenkins Remoting library arbitrary file read vulnerability
    Alta · 9.0 CVE-2024-43044 < 2.452.4, >= 2.460, < 2.462.1, >= 2.470, < 2.471 2.452.4, 2.462.1, 2.471
  9. Arbitrary file read vulnerability through the Jenkins CLI can lead to RCE
    Crítica · 9.8 Explotada en ataques CVE-2024-23897 >= 1.606, < 2.426.3, >= 2.427, < 2.440.1, >= 2.441, < 2.442 2.426.3, 2.440.1, 2.442
  10. Cross-site WebSocket hijacking vulnerability in the Jenkins CLI
    Alta · 8.8 CVE-2024-23898 >= 2.217, < 2.426.3, >= 2.427, < 2.442, = 2.441 2.426.3, 2.442
  11. Jenkins temporary plugin file created with insecure permissions
    Alta · 7.0 CVE-2023-43496 >= 2.50, < 2.414.2, >= 2.415, < 2.424 2.414.2, 2.424
  12. Jenkins Cross-site Scripting vulnerability
    Alta · 8.0 CVE-2023-43495 >= 2.50, < 2.414.2, >= 2.415, < 2.424 2.414.2, 2.424
  13. Jenkins Stored Cross-site Scripting vulnerability
    Alta · 8.0 CVE-2023-39151 >= 2.402, < 2.414.1, < 2.401.3, >= 2.415, < 2.416 2.414.1, 2.401.3, 2.416
  14. Jenkins CSRF protection bypass vulnerability
    Alta · 8.0 CVE-2023-35141 < 2.400 2.400
  15. Cross-site Scripting vulnerability in Jenkins
    Alta · 8.8 CVE-2023-27898 >= 2.376, < 2.394, < 2.375.4 2.394, 2.375.4
  16. Incorrect Authorization in Jenkins Core
    Alta · 7.0 CVE-2023-27899 >= 2.376, < 2.387.1, < 2.375.4, >= 2.388, < 2.394 2.387.1, 2.375.4, 2.394
  17. Denial of service in Jenkins Core
    Alta · 7.5 CVE-2023-27901 >= 2.388, < 2.394, < 2.375.4, >= 2.376, < 2.387.1 2.394, 2.375.4, 2.387.1
  18. Jenkins vulnerable to stored cross site scripting in the I:helpIcon component
    Alta · 8.0 CVE-2022-41224 >= 2.367, < 2.370 2.370
  19. Cross-site Scripting vulnerability in Jenkins
    Alta · 8.0 CVE-2022-34170 >= 2.350, < 2.356, >= 2.320, < 2.332.4, >= 2.346, < 2.346.1 2.356, 2.332.4, 2.346.1
  20. Unauthorized view fragment access in Jenkins
    Alta · 7.5 CVE-2022-34175 >= 2.335, < 2.356 2.356
  21. Cross-site Scripting vulnerability in Jenkins
    Alta · 8.0 CVE-2022-34173 >= 2.340, < 2.356 2.356
  22. Cross-site Scripting vulnerability in Jenkins
    Alta · 8.0 CVE-2022-34172 >= 2.340, < 2.356, >= 2.332, < 2.332.4 2.356, 2.332.4
  23. Cross-site Scripting vulnerability in Jenkins
    Alta · 8.0 CVE-2022-34171 >= 2.350, < 2.356, >= 2.346, < 2.346.1, < 2.332.4 2.356, 2.346.1, 2.332.4
  24. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21686 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  25. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21685 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  26. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21689 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  27. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21690 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  28. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21692 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  29. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21693 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  30. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21694 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  31. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21688 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  32. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21691 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  33. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21687 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  34. Agent-to-controller access control allowed writing to sensitive directory used by Jenkins Pipeline: Shared Groovy Libraries Plugin
    Alta · 8.8 CVE-2021-21696 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  35. Agent-to-controller access control allows reading/writing most content of build directories in Jenkins
    Crítica · 9.1 CVE-2021-21697 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  36. Multiple vulnerabilities allow bypassing path filtering of agent-to-controller access control in Jenkins
    Crítica · 9.0 CVE-2021-21695 < 2.303.3, >= 2.304, < 2.319 2.303.3, 2.319
  37. Session fixation vulnerability in Jenkins
    Alta · 7.5 CVE-2021-21671 >= 2.292, < 2.300, < 2.289.2 2.300, 2.289.2
  38. Path traversal vulnerability in Jenkins agent names
    Alta · 8.0 CVE-2021-21605 < 2.263.2, >= 2.264, < 2.275 2.263.2, 2.275
  39. Improper handling of REST API XML deserialization errors in Jenkins
    Alta · 8.0 CVE-2021-21604 < 2.263.2, >= 2.264, < 2.275 2.263.2, 2.275
  40. Jenkins Cross-site Scripting vulnerability in project naming strategy
    Alta · 8.0 CVE-2020-2230 < 2.235.4, >= 2.236, < 2.252 2.235.4, 2.252
  41. Jenkins Cross-Site Scripting vulnerability in help icons
    Alta · 8.0 CVE-2020-2229 < 2.235.4, >= 2.236, < 2.252 2.235.4, 2.252
Mostrar más (20) Mostrando 41 de 82

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