manifest.AppName / HDDSubdirs / VolumeNames are attacker-controlled JSON inside
an imported .fab and reach filepath.Join+MkdirAll/extractTar with a trusted base
(restore.go:339/606/678). UnmarshalManifest did zero validation, so '../..' in
any of them escaped the stacks / HDD destination dir.
- New appexport.ValidateSegment + validateManifestPaths; UnmarshalManifest now
fails the parse on a traversal segment (the chokepoint).
- Defence-in-depth ValidateSegment guards at the HDD-subdir and volume-name join
loops in restore.go.
- ConfigFiles deliberately NOT validated (holds dotfiles like .felhom.yml; never
used in a restore join).
- Permanent regression test (was the deep-sweep failing audit test) now asserts
rejection of traversal + acceptance of legit names.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Add detailed [DEBUG] logging to every controller module when
logging.level is set to "debug". Each module with stateful debug
uses SetDebug(bool) wired from main.go. Covers stacks, backup,
cloudflare, integrations, system, monitor, settings, scheduler,
web handlers, storage, metrics, API, selfupdate, and assets.
Also includes the app export/import (.fab bundles) feature from
v0.32.0 and its debug page integration.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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