CVE-2025-54059 – chainguard.dev/melange

Package

Manager: go
Name: chainguard.dev/melange
Vulnerable Version: >=0.23.0 <0.29.5

Severity

Level: Medium

CVSS v3.1: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L

CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

EPSS: 0.00012 pctl0.01124

Details

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](https://github.com/chainguard-dev/melange/releases/tag/v0.23.0)). ### Impact This potentially allows an unprivileged user to tamper with apk SBOMs on a running image, potentially confusing security scanners. An attacker could also perform a DoS under special circumstances. ### Patches This issue was addressed in melange in e29494b ("fix: tighten up permissions for written SBOM files and signature tarballs (#2086)") ([v0.29.5](https://github.com/chainguard-dev/melange/releases/tag/v0.29.5)). ## Acknowledgements Thanks to Cody Harris [H2O.ai](https://h2o.ai/) and Markus Boehme for independently reporting this issue.

Metadata

Created: 2025-07-18T20:13:21Z
Modified: 2025-07-18T20:13:21Z
Source: https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/07/GHSA-5662-cv6m-63wh/GHSA-5662-cv6m-63wh.json
CWE IDs: ["CWE-276"]
Alternative ID: GHSA-5662-cv6m-63wh
Finding: F159
Auto approve: 1