Описание
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where runc exec --cap created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes runc exec --cap behavior such that the additional capabilities granted to the process being executed (as specified via --cap arguments) do not include inheritable capabilities. In addition, runc spec is changed to not set any inheritable capabilities in the created example OCI spec (config.json) file.
A flaw was found in runc, where runc exec --cap executed processes with non-empty inheritable Linux process capabilities. This issue creates an atypical Linux environment and enables programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2).
Отчет
This issue is rated as low severity as the vulnerability can only result in atypical linux environment,and it's complex exploitation only results in minimal impact on system confidentiality, integrity, and availability in typical environments.
Меры по смягчению последствий
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 7 | runc | Out of support scope | ||
| Red Hat Enterprise Linux 8 | container-tools:2.0/runc | Fix deferred | ||
| Red Hat Enterprise Linux 8 | container-tools:3.0/runc | Fix deferred | ||
| Red Hat OpenShift Container Platform 3.11 | runc | Out of support scope | ||
| Red Hat Enterprise Linux 8 | container-tools | Fixed | RHSA-2022:7457 | 08.11.2022 |
| Red Hat Enterprise Linux 8 | container-tools | Fixed | RHSA-2022:7469 | 08.11.2022 |
| Red Hat Enterprise Linux 9 | runc | Fixed | RHSA-2022:8090 | 15.11.2022 |
| Red Hat OpenShift Container Platform 4.11 | runc | Fixed | RHSA-2022:5068 | 10.08.2022 |
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Дополнительная информация
Статус:
5.6 Medium
CVSS3
Связанные уязвимости
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes `runc exec --cap` behavior such that the additional capabilities granted to the process being executed (as specified via `--cap` arguments) do not include inheritable capabilities. In addition, `runc spec` is changed to not set any inheritable capabilities in the created example OCI spec (`config.json`) file.
runc is a CLI tool for spawning and running containers on Linux according to the OCI specification. A bug was found in runc prior to version 1.1.2 where `runc exec --cap` created processes with non-empty inheritable Linux process capabilities, creating an atypical Linux environment and enabling programs with inheritable file capabilities to elevate those capabilities to the permitted set during execve(2). This bug did not affect the container security sandbox as the inheritable set never contained more capabilities than were included in the container's bounding set. This bug has been fixed in runc 1.1.2. This fix changes `runc exec --cap` behavior such that the additional capabilities granted to the process being executed (as specified via `--cap` arguments) do not include inheritable capabilities. In addition, `runc spec` is changed to not set any inheritable capabilities in the created example OCI spec (`config.json`) file.
runc is a CLI tool for spawning and running containers on Linux accord ...
5.6 Medium
CVSS3