Skip to content

fix(cli/configure): write .env at mode 0o600 to protect LLM API keys #1969

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
JAE0Y2N wants to merge 1 commit into
base: main
Choose a base branch
from
+14 −2
Open

fix(cli/configure): write .env at mode 0o600 to protect LLM API keys #1969

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
16 changes: 14 additions & 2 deletions packages/cli/src/configure.ts
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -2,7 +2,7 @@ import { select, input, confirm, password } from "@inquirer/prompts"
import { MODEL_PROVIDERS } from "../../core/src/constants"
import { resolveLanguageModelConfigurations } from "../../core/src/config"
import { parse } from "dotenv"
import { writeFile } from "fs/promises"
import { chmod, writeFile } from "fs/promises"
import { runtimeHost } from "../../core/src/host"
import { deleteUndefinedValues } from "../../core/src/cleaners"
import { logInfo, logVerbose, logWarn } from "../../core/src/util"
Expand Down Expand Up @@ -183,5 +183,17 @@ async function patchEnvFile(filePath: string, key: string, value: string) {
updatedLines.push(`${key}=${value}`)
}

await writeFile(filePath, updatedLines.join("\n"), "utf-8")
// .env files written via `configure` embed LLM provider API keys
// (OPENAI_API_KEY, ANTHROPIC_API_KEY, AZURE_OPENAI_API_KEY, etc.) that
// the user just entered at the prompt. Restrict the file to the owning
// user on POSIX so a co-tenant on the same host can't recover them.
// `mode` applies on initial create; chmod afterward handles the overwrite
// case (where `writeFile`'s mode option doesn't apply). Try/catch wraps
// chmod for Windows fallback (no POSIX modes).
await writeFile(filePath, updatedLines.join("\n"), { encoding: "utf-8", mode: 0o600 })
try {
await chmod(filePath, 0o600)
} catch {
// Windows fallback.
}
}