apko has incorrect permission (0666) in /etc/ld.so.cache and other files
cve-program · CVE-2025-53945
Publishedapko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.
Read the publisher's advisoryeuvd · EUVD-2025-21896
Publishedapko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.
Read the publisher's advisorynvd · CVE-2025-53945
Publishedapko allows users to build and publish OCI container images built from apk packages. Starting in version 0.27.0 and prior to version 0.29.5, critical files were inadvertently set to 0666, which could likely be abused for root escalation. Version 0.29.5 contains a fix for the issue.
Read the publisher's advisoryosv · GHSA-x6ph-r535-3vjw
PublishedIt was discovered that the ld.so.cache in images generated by apko had file system permissions mode `0666`: ``` bash-5.3# find / -type f -perm -o+w /etc/ld.so.cache ``` This issue was introduced in commit [04f37e2 ("generate /etc/ld.so.cache (#1629)")](https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9)([v0.27.0](https://github.com/chainguard-dev/apko/releases/tag/v0.27.0)). ### Impact This potentially allows a local unprivileged user to add additional additional directories including dynamic libraries to the dynamic loader path. A user could exploit this by placing a malicious library in a directory they control. ### Patches This issue was addressed in apko in [aedb077 ("fix: /etc/ld.so.cache file permissions (#1758)")](https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3) ([v0.29.5](https://github.com/chainguard-dev/apko/releases/tag/v0.29.5)). ### Acknowledgements Many thanks to Cody Harris from [H2O.ai](http://h2o.ai/) for reporting this issue.
Read the publisher's advisoryosv · GO-2025-3816
Publishedapko is vulnerable to attack through incorrect permissions in /etc/ld.so.cache and other files in chainguard.dev/apko
Read the publisher's advisoryAffected versions, risk and source history
Related advisories and sources
Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2025-53945 · CVE overview and exploitation status
cve-program · CVE-2025-53945
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw
- https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9
- https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3
- https://github.com/chainguard-dev/apko/releases/tag/v0.27.0
- https://github.com/chainguard-dev/apko/releases/tag/v0.29.5
euvd · EUVD-2025-21896
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw
- https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9
- https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3
- https://github.com/chainguard-dev/apko/releases/tag/v0.27.0
- https://github.com/chainguard-dev/apko/releases/tag/v0.29.5
nvd · CVE-2025-53945
- https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9
- https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3
- https://github.com/chainguard-dev/apko/releases/tag/v0.27.0
- https://github.com/chainguard-dev/apko/releases/tag/v0.29.5
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw
osv · GHSA-x6ph-r535-3vjw
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw
- https://nvd.nist.gov/vuln/detail/CVE-2025-53945
- https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9
- https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3
- https://github.com/chainguard-dev/apko
- https://github.com/chainguard-dev/apko/releases/tag/v0.29.5
osv · GO-2025-3816
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-x6ph-r535-3vjw
- https://nvd.nist.gov/vuln/detail/CVE-2025-53945
- https://github.com/chainguard-dev/apko/commit/04f37e2d50d5a502e155788561fb7d40de705bd9
- https://github.com/chainguard-dev/apko/commit/aedb0772d6bf6e74d8f17690946dbc791d0f6af3
- https://github.com/chainguard-dev/apko/releases/tag/v0.29.5
Related changes
Linked by CVE identifierNo related changes are available here.