Security: Path Traversal Vulnerability in Asset Hasher#7353
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…asher The writeHashedAsset function in asset-hasher.ts does not validate the logicalName parameter. An attacker could provide paths like '../../../etc/passwd' to write files outside the intended assets directory. Signed-off-by: tomaioo <203048277+tomaioo@users.noreply.github.com>
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Summary
Security: Path Traversal Vulnerability in Asset Hasher
Problem
Severity:
Critical| File:packages/backend.ai-docs-toolkit/src/asset-hasher.ts:L48The writeHashedAsset function in asset-hasher.ts does not validate the logicalName parameter. An attacker could provide paths like '../../../etc/passwd' to write files outside the intended assets directory.
Solution
Add path validation to ensure logicalName does not contain path traversal sequences. Use path.resolve() to normalize paths and verify the result stays within the assetsDir.
Changes
packages/backend.ai-docs-toolkit/src/asset-hasher.ts(modified)