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6 vulnerabilities by crun_project
CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from nvd – Published: 2026-03-25 23:57 – Updated: 2026-03-26 18:10
VLAI
Title
Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
Summary
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/1bd7f42… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.27 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
>= 1.19, < 1.27
|
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CVE-2022-27650 (GCVE-0-2022-27650)
Vulnerability from nvd – Published: 2022-04-04 19:45 – Updated: 2024-08-03 05:32
VLAI
Summary
A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
Severity
No CVSS data available.
CWE
- CWE-276 - - Incorrect Default Permissions
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2066845 | x_refsource_MISC |
| https://github.com/containers/crun/security/advis… | x_refsource_MISC |
| https://github.com/containers/crun/commit/1aeeed2… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
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CVE-2019-18837 (GCVE-0-2019-18837)
Vulnerability from nvd – Published: 2019-11-13 20:01 – Updated: 2024-08-05 02:02
VLAI
Summary
An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.
Severity
No CVSS data available.
CWE
- Directory Traversal
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/pull/173 | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/0.10.5 | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | x_refsource_MISC |
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CVE-2026-30892 (GCVE-0-2026-30892)
Vulnerability from cvelistv5 – Published: 2026-03-25 23:57 – Updated: 2026-03-26 18:10
VLAI
Title
Crun incorrectly parses `crun exec` option `-u`, leading to privilege escalation
Summary
crun is an open source OCI Container Runtime fully written in C. In versions 1.19 through 1.26, the `crun exec` option `-u` (`--user`) is incorrectly parsed. The value `1` is interpreted as UID 0 and GID 0 when it should have been UID 1 and GID 0. The process thus runs with higher privileges than expected. Version 1.27 patches the issue.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-269 - Improper Privilege Management
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/security/advis… | x_refsource_CONFIRM |
| https://github.com/containers/crun/commit/1bd7f42… | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/1.27 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| containers | crun |
Affected:
>= 1.19, < 1.27
|
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CVE-2022-27650 (GCVE-0-2022-27650)
Vulnerability from cvelistv5 – Published: 2022-04-04 19:45 – Updated: 2024-08-03 05:32
VLAI
Summary
A flaw was found in crun where containers were incorrectly started with non-empty default permissions. A vulnerability was found in Moby (Docker Engine) where containers were started incorrectly with non-empty inheritable Linux process capabilities. This flaw allows an attacker with access to programs with inheritable file capabilities to elevate those capabilities to the permitted set when execve(2) runs.
Severity
No CVSS data available.
CWE
- CWE-276 - - Incorrect Default Permissions
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=2066845 | x_refsource_MISC |
| https://github.com/containers/crun/security/advis… | x_refsource_MISC |
| https://github.com/containers/crun/commit/1aeeed2… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | vendor-advisoryx_refsource_FEDORA |
Impacted products
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CVE-2019-18837 (GCVE-0-2019-18837)
Vulnerability from cvelistv5 – Published: 2019-11-13 20:01 – Updated: 2024-08-05 02:02
VLAI
Summary
An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.
Severity
No CVSS data available.
CWE
- Directory Traversal
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/containers/crun/pull/173 | x_refsource_MISC |
| https://github.com/containers/crun/releases/tag/0.10.5 | x_refsource_CONFIRM |
| https://lists.fedoraproject.org/archives/list/pac… | x_refsource_MISC |
| https://lists.fedoraproject.org/archives/list/pac… | x_refsource_MISC |
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