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.
Attack Parameters
Attack Vector
Local
Requires local access
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
Vulnerable Products 1
| Configuration | From (including) | Up to (excluding) |
|---|---|---|
|
Crun_Project Crun
cpe:2.3:a:crun_project:crun:*:*:*:*:*:*:*:*
|
1.19
|
<= 1.27
|
References 3
https://github.com/containers/crun/commit/1bd7f42446999b0e76bc3d575392e05c943b0…
security-advisories@github.com
https://github.com/containers/crun/releases/tag/1.27
security-advisories@github.com
https://github.com/containers/crun/security/advisories/GHSA-4vg2-xjqj-7chj
security-advisories@github.com