CVE-2025-54059: melange's world-writable permissions expose SBOM files to potential image tampering
It was discovered that the SBOM files generated by melange in apks had file system permissions mode 666:
$ apkrane ls https://packages.wolfi.dev/os/x86_64/APKINDEX.tar.gz -P hello-wolfi --full --latest | xargs wget -q -O - | tar tzv 2>/dev/null var/lib/db/sbom
drwxr-xr-x root/root 0 2025-06-23 14:17 var/lib/db/sbom
-rw-rw-rw- root/root 3383 2025-06-23 14:17 var/lib/db/sbom/hello-wolfi-2.12.2-r1.spdx.json
This issue was introduced in commit 1b272db (“Persist workspace filesystem throughout package builds (#1836)”) (v0.23.0).
References
- github.com/advisories/GHSA-5662-cv6m-63wh
- github.com/chainguard-dev/melange
- github.com/chainguard-dev/melange/commit/1b272db2a0bb3441553284cc56d87236b4b64c04
- github.com/chainguard-dev/melange/commit/e29494b4a40a91619ec1c87a09003c6d5164cea1
- github.com/chainguard-dev/melange/pull/1836
- github.com/chainguard-dev/melange/pull/2086
- github.com/chainguard-dev/melange/releases/tag/v0.29.5
- github.com/chainguard-dev/melange/security/advisories/GHSA-5662-cv6m-63wh
- nvd.nist.gov/vuln/detail/CVE-2025-54059
Code Behaviors & Features
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