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OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
Affected range
<=v1.1.4
Fixed version
Not Fixed
CVSS Score
7
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Description
runc through 1.1.4 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. NOTE: this issue exists because of a CVE-2019-19921 regression.
Improper Preservation of Permissions
Affected range
<1.1.5
Fixed version
1.1.5
CVSS Score
6.1
CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Description
Impact
It was found that AppArmor, and potentially SELinux, can be bypassed when /proc inside the container is symlinked with a specific mount configuration.
A bug was found in runc where runc exec --cap executed 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.
Patches
This bug has been fixed in runc 1.1.2. Users should update to this version as soon as possible.
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.
It was found that rootless runc makes /sys/fs/cgroup writable in following conditons:
when runc is executed inside the user namespace, and the config.json does not specify the cgroup namespace to be unshared (e.g.., (docker|podman|nerdctl) run --cgroupns=host, with Rootless Docker/Podman/nerdctl)
or, when runc is executed outside the user namespace, and /sys is mounted with rbind, ro (e.g., runc spec --rootless; this condition is very rare)
A container may gain the write access to user-owned cgroup hierarchy /sys/fs/cgroup/user.slice/... on the host .
Other users's cgroup hierarchies are not affected.
Patches
v1.1.5 (planned)
Workarounds
Condition 1: Unshare the cgroup namespace ((docker|podman|nerdctl) run --cgroupns=private). This is the default behavior of Docker/Podman/nerdctl on cgroup v2 hosts.
Condition 2 (very rare): add /sys/fs/cgroup to maskedPaths
github.com/containers/podman/v44.7.2 (golang)
pkg:golang/github.com/containers/podman/v4@4.7.2
Affected range
>=4.1.0-rc1
Fixed version
Not Fixed
Description
The local path and the lowest subdirectory may be disclosed due to incorrect absolute path traversal, resulting in an impact to confidentiality.
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This PR contains the following updates:
0.11.0->0.12.0Warning
Some dependencies could not be looked up. Check the Dependency Dashboard for more information.
Release Notes
containers/podman-tui (containers/podman-tui)
v0.12.0Compare Source
What's Changed
Full Changelog: containers/podman-tui@v0.11.0...v0.12.0
Configuration
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