Vulnerability-Lookup

BDU:2021-06196 (CVE-2021-25741)

Vulnerability from fstec – Published: 2021-12-17 – Updated: 2026-03-18 – View on bdu.fstec.ru Exploit publicly available Fixed

Title

Уязвимость программы для оркестровки контейнеризированных приложений Kubernetes, связанная с недостатками разграничения доступа, позволяющая нарушителю обойти введенные ограничения безопасности

Summary

Уязвимость утилиты Kubernetes связана с недостатками разграничения доступа. Эксплуатация уязвимости может позволить нарушителю, действующему удаленно, обойти введенные ограничения безопасности с помощью создания контейнер с подключаемыми томами подпути для доступа к файлам и каталогам за пределами тома, в том числе в файловой системе хоста

Severity

9.0 (High) CVSS 2.0


                      
                        AV:N/AC:L/Au:S/C:C/I:C/A:C

8.8 (High) CVSS 3.0


                      
                        CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Class

Code vulnerability

Status

Confirmed by the vendor

Exploitation

Authorization bypass

Incidents

Being clarified

Remediation

Software update

CWE

CWE-264 - Разрешения, привилегии и средства управления доступом

Aliases

CVE-2021-25741

References

8 references

URL
https://altsp.su/obnovleniya-bezopasnosti/
https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s
https://redos.red-soft.ru/updatesec/
https://www.cybersecurity-help.cz/vdb/SB2021092804
https://www.securitylab.ru/vulnerability/525074.php
https://security-tracker.debian.org/tracker/CVE-2021-25741
https://access.redhat.com/security/cve/CVE-2021-25741
https://github.com/Glutenfree69/ZigRaceExploit

Impacted products

5 products from 6 vendors

Vendors

Red Hat, Inc., ООО «Ред Софт», Сообщество свободного программного обеспечения, Google Inc, АО «ИВК»

Products

OpenShift Container Platform, РЕД ОС (запись в едином реестре российских программ №3751), Debian GNU/Linux, Kubernetes, Альт 8 СП (запись в едином реестре российских программ №4305)

Versions

3.11 (OpenShift Container Platform), 7.2 Муром (РЕД ОС), 4.6 (OpenShift Container Platform), 4.7 (OpenShift Container Platform), 11 (Debian GNU/Linux), 4.8 (OpenShift Container Platform), от 1.22.0 до 1.22.2 (Kubernetes), от 1.21.0 до 1.21.5 (Kubernetes), от 1.20.0 до 1.20.11 (Kubernetes), до 1.19.15 (Kubernetes), - (Альт 8 СП)

Product types

Application software, Operating system, AI development software

Platforms

ООО «Ред Софт» РЕД ОС 7.2 Муром (запись в едином реестре российских программ №3751), Сообщество свободного программного обеспечения Debian GNU/Linux 11, АО «ИВК» Альт 8 СП - (запись в едином реестре российских программ №4305)

Mitigations

Использование рекомендаций: Для РедОС: http://repo.red-soft.ru/redos/7.2c/x86_64/updates/ Для Kubernetes: https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s Для ОС Альт 8 СП: Обновление программного обеспечения до актуальной версии Для Debian GNU/Linux: https://security-tracker.debian.org/tracker/CVE-2021-25741 Для программных продуктов Red Hat Inc.: https://access.redhat.com/security/cve/CVE-2021-25741

JSON

To clipboard

{
  "CVSS 2.0": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
  "CVSS 3.0": "AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
  "CVSS 4.0": null,
  "remediation_\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": null,
  "remediation_\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435": null,
  "\u0412\u0435\u043d\u0434\u043e\u0440 \u041f\u041e": "Red Hat, Inc., \u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb, \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f, Google Inc, \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb",
  "\u0412\u0435\u0440\u0441\u0438\u044f \u041f\u041e": "3.11 (OpenShift Container Platform), 7.2 \u041c\u0443\u0440\u043e\u043c (\u0420\u0415\u0414 \u041e\u0421), 4.6 (OpenShift Container Platform), 4.7 (OpenShift Container Platform), 11 (Debian GNU/Linux), 4.8 (OpenShift Container Platform), \u043e\u0442 1.22.0 \u0434\u043e 1.22.2 (Kubernetes), \u043e\u0442 1.21.0 \u0434\u043e 1.21.5 (Kubernetes), \u043e\u0442 1.20.0 \u0434\u043e 1.20.11 (Kubernetes), \u0434\u043e 1.19.15 (Kubernetes), - (\u0410\u043b\u044c\u0442 8 \u0421\u041f)",
  "\u0412\u043e\u0437\u043c\u043e\u0436\u043d\u044b\u0435 \u043c\u0435\u0440\u044b \u043f\u043e \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044e": "\u0418\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0435 \u0440\u0435\u043a\u043e\u043c\u0435\u043d\u0434\u0430\u0446\u0438\u0439:\n\u0414\u043b\u044f \u0420\u0435\u0434\u041e\u0421:\nhttp://repo.red-soft.ru/redos/7.2c/x86_64/updates/\n\n\u0414\u043b\u044f Kubernetes:\nhttps://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s\n\n\u0414\u043b\u044f \u041e\u0421 \u0410\u043b\u044c\u0442 8 \u0421\u041f:\n\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f \u0434\u043e \u0430\u043a\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0440\u0441\u0438\u0438\n\n\u0414\u043b\u044f Debian GNU/Linux:\nhttps://security-tracker.debian.org/tracker/CVE-2021-25741\n\n\u0414\u043b\u044f \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u044b\u0445 \u043f\u0440\u043e\u0434\u0443\u043a\u0442\u043e\u0432 Red Hat Inc.:\nhttps://access.redhat.com/security/cve/CVE-2021-25741",
  "\u0414\u0430\u0442\u0430 \u0432\u044b\u044f\u0432\u043b\u0435\u043d\u0438\u044f": "28.09.2021",
  "\u0414\u0430\u0442\u0430 \u043f\u043e\u0441\u043b\u0435\u0434\u043d\u0435\u0433\u043e \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u044f": "18.03.2026",
  "\u0414\u0430\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438": "17.12.2021",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440": "BDU:2021-06196",
  "\u0418\u0434\u0435\u043d\u0442\u0438\u0444\u0438\u043a\u0430\u0442\u043e\u0440\u044b \u0434\u0440\u0443\u0433\u0438\u0445 \u0441\u0438\u0441\u0442\u0435\u043c \u043e\u043f\u0438\u0441\u0430\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "CVE-2021-25741",
  "\u0418\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f \u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0430",
  "\u041a\u043b\u0430\u0441\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043a\u043e\u0434\u0430",
  "\u041d\u0430\u0437\u0432\u0430\u043d\u0438\u0435 \u041f\u041e": "OpenShift Container Platform, \u0420\u0415\u0414 \u041e\u0421 (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), Debian GNU/Linux, Kubernetes, \u0410\u043b\u044c\u0442 8 \u0421\u041f (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u041e\u0421 \u0438 \u0442\u0438\u043f \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b": "\u041e\u041e\u041e \u00ab\u0420\u0435\u0434 \u0421\u043e\u0444\u0442\u00bb \u0420\u0415\u0414 \u041e\u0421 7.2 \u041c\u0443\u0440\u043e\u043c  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21163751), \u0421\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f Debian GNU/Linux 11 , \u0410\u041e \u00ab\u0418\u0412\u041a\u00bb \u0410\u043b\u044c\u0442 8 \u0421\u041f -  (\u0437\u0430\u043f\u0438\u0441\u044c \u0432 \u0435\u0434\u0438\u043d\u043e\u043c \u0440\u0435\u0435\u0441\u0442\u0440\u0435 \u0440\u043e\u0441\u0441\u0438\u0439\u0441\u043a\u0438\u0445 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c \u21164305)",
  "\u041d\u0430\u0438\u043c\u0435\u043d\u043e\u0432\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u044b \u0434\u043b\u044f \u043e\u0440\u043a\u0435\u0441\u0442\u0440\u043e\u0432\u043a\u0438 \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440\u0438\u0437\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0439 Kubernetes, \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u0430\u044f \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u0440\u0430\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0430\u044f \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e \u043e\u0431\u043e\u0439\u0442\u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438",
  "\u041d\u0430\u043b\u0438\u0447\u0438\u0435 \u044d\u043a\u0441\u043f\u043b\u043e\u0439\u0442\u0430": "\u0421\u0443\u0449\u0435\u0441\u0442\u0432\u0443\u0435\u0442 \u0432 \u043e\u0442\u043a\u0440\u044b\u0442\u043e\u043c \u0434\u043e\u0441\u0442\u0443\u043f\u0435",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "\u0420\u0430\u0437\u0440\u0435\u0448\u0435\u043d\u0438\u044f, \u043f\u0440\u0438\u0432\u0438\u043b\u0435\u0433\u0438\u0438 \u0438 \u0441\u0440\u0435\u0434\u0441\u0442\u0432\u0430 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u043e\u043c (CWE-264)",
  "\u041e\u043f\u0438\u0441\u0430\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0423\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u044c \u0443\u0442\u0438\u043b\u0438\u0442\u044b Kubernetes \u0441\u0432\u044f\u0437\u0430\u043d\u0430 \u0441 \u043d\u0435\u0434\u043e\u0441\u0442\u0430\u0442\u043a\u0430\u043c\u0438 \u0440\u0430\u0437\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430. \u042d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u044f \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043c\u043e\u0436\u0435\u0442 \u043f\u043e\u0437\u0432\u043e\u043b\u0438\u0442\u044c \u043d\u0430\u0440\u0443\u0448\u0438\u0442\u0435\u043b\u044e, \u0434\u0435\u0439\u0441\u0442\u0432\u0443\u044e\u0449\u0435\u043c\u0443 \u0443\u0434\u0430\u043b\u0435\u043d\u043d\u043e, \u043e\u0431\u043e\u0439\u0442\u0438 \u0432\u0432\u0435\u0434\u0435\u043d\u043d\u044b\u0435 \u043e\u0433\u0440\u0430\u043d\u0438\u0447\u0435\u043d\u0438\u044f \u0431\u0435\u0437\u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0441 \u043f\u043e\u043c\u043e\u0449\u044c\u044e \u0441\u043e\u0437\u0434\u0430\u043d\u0438\u044f \u043a\u043e\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u0441 \u043f\u043e\u0434\u043a\u043b\u044e\u0447\u0430\u0435\u043c\u044b\u043c\u0438 \u0442\u043e\u043c\u0430\u043c\u0438 \u043f\u043e\u0434\u043f\u0443\u0442\u0438 \u0434\u043b\u044f \u0434\u043e\u0441\u0442\u0443\u043f\u0430 \u043a \u0444\u0430\u0439\u043b\u0430\u043c \u0438 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430\u043c \u0437\u0430 \u043f\u0440\u0435\u0434\u0435\u043b\u0430\u043c\u0438 \u0442\u043e\u043c\u0430, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0432 \u0444\u0430\u0439\u043b\u043e\u0432\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0445\u043e\u0441\u0442\u0430",
  "\u041f\u043e\u0441\u043b\u0435\u0434\u0441\u0442\u0432\u0438\u044f \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": null,
  "\u041f\u0440\u043e\u0447\u0430\u044f \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u044f": null,
  "\u0421\u0432\u044f\u0437\u044c \u0441 \u0438\u043d\u0446\u0438\u0434\u0435\u043d\u0442\u0430\u043c\u0438 \u0418\u0411": "\u0414\u0430\u043d\u043d\u044b\u0435 \u0443\u0442\u043e\u0447\u043d\u044f\u044e\u0442\u0441\u044f",
  "\u0421\u043e\u0441\u0442\u043e\u044f\u043d\u0438\u0435 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u0430",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u0443\u0441\u0442\u0440\u0430\u043d\u0435\u043d\u0438\u044f": "\u041e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u043d\u043e\u0433\u043e \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0438\u044f",
  "\u0421\u043f\u043e\u0441\u043e\u0431 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438": "\u041d\u0430\u0440\u0443\u0448\u0435\u043d\u0438\u0435 \u0430\u0432\u0442\u043e\u0440\u0438\u0437\u0430\u0446\u0438\u0438",
  "\u0421\u0441\u044b\u043b\u043a\u0438 \u043d\u0430 \u0438\u0441\u0442\u043e\u0447\u043d\u0438\u043a\u0438": "https://altsp.su/obnovleniya-bezopasnosti/\nhttps://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s\nhttps://redos.red-soft.ru/updatesec/\nhttps://www.cybersecurity-help.cz/vdb/SB2021092804\nhttps://www.securitylab.ru/vulnerability/525074.php\nhttps://security-tracker.debian.org/tracker/CVE-2021-25741\nhttps://access.redhat.com/security/cve/CVE-2021-25741\nhttps://github.com/Glutenfree69/ZigRaceExploit ",
  "\u0421\u0442\u0430\u0442\u0443\u0441 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u041f\u043e\u0434\u0442\u0432\u0435\u0440\u0436\u0434\u0435\u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0435\u043c",
  "\u0422\u0438\u043f \u041f\u041e": "\u041f\u0440\u0438\u043a\u043b\u0430\u0434\u043d\u043e\u0435 \u041f\u041e \u0438\u043d\u0444\u043e\u0440\u043c\u0430\u0446\u0438\u043e\u043d\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c, \u041e\u043f\u0435\u0440\u0430\u0446\u0438\u043e\u043d\u043d\u0430\u044f \u0441\u0438\u0441\u0442\u0435\u043c\u0430, \u041f\u041e \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0418\u0418",
  "\u0422\u0438\u043f \u043e\u0448\u0438\u0431\u043a\u0438 CWE": "CWE-264",
  "\u0423\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438": "\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 2.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 9)\n\u0412\u044b\u0441\u043e\u043a\u0438\u0439 \u0443\u0440\u043e\u0432\u0435\u043d\u044c \u043e\u043f\u0430\u0441\u043d\u043e\u0441\u0442\u0438 (\u0431\u0430\u0437\u043e\u0432\u0430\u044f \u043e\u0446\u0435\u043d\u043a\u0430 CVSS 3.0 \u0441\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u0435\u0442 8,8)"
}

CVE-2021-25741 (GCVE-0-2021-25741)

Vulnerability from cvelistv5 – Published: 2021-09-20 17:05 – Updated: 2024-09-16 23:26

Title

Symlink Exchange Can Allow Host Filesystem Access

Summary

A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files & directories outside of the volume, including on the host filesystem.

Severity

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-08-20 13:25 UTC

CWE

CWE-20 - Improper Input Validation

Assigner

kubernetes mitre root

References

3 references

URL	Tags
https://groups.google.com/g/kubernetes-security-a…	x_refsource_MISC
https://github.com/kubernetes/kubernetes/issues/104980	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2021100…	x_refsource_CONFIRM

Impacted products

2 products

Vendor	Product	Version
Kubernetes	Kubernetes	Affected: unspecified , ≤ 1.19.14 (custom) Affected: unspecified , ≤ 1.20.10 (custom) Affected: unspecified , ≤ 1.21.4 (custom) Affected: unspecified , ≤ 1.22.1 (custom)
kubernetes	kubernetes	Affected: 0 , ≤ 1.19.14 (custom) Affected: 1.20.0 , ≤ 1.20.10 (custom) Affected: 1.21.0 , ≤ 1.21.4 (custom) Affected: 1.22.0 , ≤ 1.22.1 (custom) cpe:2.3:a:kubernetes:kubernetes::::::::

Credits

Fabricio Voznika & Mark Wolters

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T20:11:27.655Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/kubernetes/kubernetes/issues/104980"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:kubernetes:kubernetes:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "kubernetes",
            "vendor": "kubernetes",
            "versions": [
              {
                "lessThanOrEqual": "1.19.14",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.20.10",
                "status": "affected",
                "version": "1.20.0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.21.4",
                "status": "affected",
                "version": "1.21.0",
                "versionType": "custom"
              },
              {
                "lessThanOrEqual": "1.22.1",
                "status": "affected",
                "version": "1.22.0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-25741",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-20T13:25:58.469004Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-08-20T13:37:41.191Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Kubernetes",
          "vendor": "Kubernetes",
          "versions": [
            {
              "lessThanOrEqual": "1.19.14",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "1.20.10",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "1.21.4",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            },
            {
              "lessThanOrEqual": "1.22.1",
              "status": "affected",
              "version": "unspecified",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "Fabricio Voznika \u0026 Mark Wolters"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2021-10-08T14:06:36.000Z",
        "orgId": "a6081bf6-c852-4425-ad4f-a67919267565",
        "shortName": "kubernetes"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/kubernetes/kubernetes/issues/104980"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
        }
      ],
      "source": {
        "defect": [
          "https://github.com/kubernetes/kubernetes/issues/104980"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Symlink Exchange Can Allow Host Filesystem Access",
      "x_ConverterErrors": {
        "DATE_PUBLIC": {
          "error": "v4 DATE_PUBLIC is invalid",
          "message": "hour must be in 0..23"
        }
      },
      "x_generator": {
        "engine": "Vulnogram 0.0.9"
      },
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@kubernetes.io",
          "DATE_PUBLIC": "2021-09-15T121:15:00.000Z",
          "ID": "CVE-2021-25741",
          "STATE": "PUBLIC",
          "TITLE": "Symlink Exchange Can Allow Host Filesystem Access"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "Kubernetes",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.19.14"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.20.10"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.21.4"
                          },
                          {
                            "version_affected": "\u003c=",
                            "version_value": "1.22.1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Kubernetes"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Fabricio Voznika \u0026 Mark Wolters"
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A security issue was discovered in Kubernetes where a user may be able to create a container with subpath volume mounts to access files \u0026 directories outside of the volume, including on the host filesystem."
            }
          ]
        },
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-20: Improper Input Validation"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s",
              "refsource": "MISC",
              "url": "https://groups.google.com/g/kubernetes-security-announce/c/nyfdhK24H7s"
            },
            {
              "name": "https://github.com/kubernetes/kubernetes/issues/104980",
              "refsource": "MISC",
              "url": "https://github.com/kubernetes/kubernetes/issues/104980"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20211008-0006/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20211008-0006/"
            }
          ]
        },
        "source": {
          "defect": [
            "https://github.com/kubernetes/kubernetes/issues/104980"
          ],
          "discovery": "EXTERNAL"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a6081bf6-c852-4425-ad4f-a67919267565",
    "assignerShortName": "kubernetes",
    "cveId": "CVE-2021-25741",
    "datePublished": "2021-09-20T17:05:21.097Z",
    "dateReserved": "2021-01-21T00:00:00.000Z",
    "dateUpdated": "2024-09-16T23:26:06.351Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

BDU:2021-06196 (CVE-2021-25741)

CVE-2021-25741 (GCVE-0-2021-25741)

Tags

Sightings

Nomenclature

Related by attack behaviour