fix(auth): remove missing-user password-verification quick exit - #674
fix(auth): remove missing-user password-verification quick exit#674seonghobae wants to merge 19 commits into
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- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 동일한 계산 시간(더미 salt/hash 사용)을 소비하도록 수정했습니다. - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 무조건 실행하여 사용자 존재 여부에 따른 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다.
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drafts: true📝 WalkthroughWalkthrough로그인 라우트가 사용자 존재 여부와 관계없이 Changes인증 타이밍 공격 방어
Estimated code review effort: 3 (Moderate) | ~20 minutes Merge Risk: 🔵 Low · up to Login failures now perform password work for missing users to reduce enumeration timing differences. The implementation path is present, but the added smoke test may not reliably cover that missing-user behavior until its fixture state is guaranteed. Sequence Diagram(s)sequenceDiagram
participant LoginClient
participant LoginRoute
participant verifyPassword
LoginClient->>LoginRoute: 로그인 요청 전송
LoginRoute->>verifyPassword: 비밀번호 검증 호출
verifyPassword-->>LoginRoute: isValid 반환
LoginRoute-->>LoginClient: 성공 또는 401 응답
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Inline comments:
In `@tests/api/smoke.mjs`:
- Line 42: Update the login smoke test around the request to ensure the test
email cannot belong to an existing user, either by removing that account through
the fixture setup or by generating a collision-resistant nonexistent email per
run, while preserving validation of the null-hash authentication path in the
login handler.
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.jules/sentinel.mdserver/app.mjsserver/auth.mjstests/api/smoke.mjs
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- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 동일한 계산 시간(더미 salt/hash 사용)을 소비하도록 수정했습니다. - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 무조건 실행하여 사용자 존재 여부에 따른 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다.
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- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 동일한 계산 시간(더미 salt/hash 사용)을 소비하도록 수정했습니다. - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 무조건 실행하여 사용자 존재 여부에 따른 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다. - `tests/unit/auth-password.test.mjs`: causal regression 방지를 위해 null 해시에도 시간이 소요되는지 확인하는 검증을 추가했습니다.
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@coderabbitai review Please review current exact head |
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Tip For best results, initiate chat on the files or code changes. 🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
requested_head="efb384a3e89b468303804b0b63444c591363f33d"
echo '=== HEAD verification ==='
git rev-parse HEAD
git cat-file -t "$requested_head"
git merge-base --is-ancestor "$requested_head" HEAD && echo "requested_commit_is_ancestor_of_HEAD=true" || true
git diff --exit-code "$requested_head" HEAD || true
echo '=== Commit summary and changed paths ==='
git show --no-ext-diff --format=fuller --stat "$requested_head"
git diff-tree --no-commit-id --name-status -r "$requested_head"
echo '=== Exact commit patch ==='
git show --no-ext-diff --format= --find-renames "$requested_head" -- \
server/app.mjs server/auth.mjs tests/api/smoke.mjs docs/product-technical-gap-baseline.md .jules/sentinel.md
echo '=== Relevant file outlines ==='
ast-grep outline server/app.mjs --items all --view expanded || true
ast-grep outline server/auth.mjs --items all --view expanded || true
ast-grep outline tests/api/smoke.mjs --items all --view expanded || true
echo '=== Relevant source and test context ==='
for file in server/app.mjs server/auth.mjs tests/api/smoke.mjs docs/product-technical-gap-baseline.md; do
if [ -f "$file" ]; then
echo "--- $file ---"
nl -ba "$file" | sed -n '1,280p'
fi
done
echo '=== Password verification definitions and call sites ==='
rg -n -C 5 --glob '*.mjs' --glob '*.js' \
'(?:export\s+)?(?:async\s+)?function\s+verifyPassword\b|\bverifyPassword\s*\(' \
.
echo '=== Authentication-related tests and project test scripts ==='
rg -n -C 4 --glob 'package.json' --glob '*.mjs' --glob '*.js' \
'"test[^"]*"|/api/auth/login|password_hash|scryptSync|timingSafeEqual' \
package.json server tests 2>/dev/null || trueLength of output: 15239 🏁 Script executed: #!/bin/bash
set -euo pipefail
head="efb384a3e89b468303804b0b63444c591363f33d"
base="$(git merge-base "$head" develop)"
printf '%s\n' '=== PR range ==='
printf 'base=%s\nhead=%s\n' "$base" "$head"
git log --oneline --decorate "$base..$head"
git diff --no-ext-diff --stat "$base...$head"
git diff --no-ext-diff --find-renames "$base...$head" -- \
server/app.mjs server/auth.mjs tests/api/smoke.mjs tests/unit/auth-password.test.mjs docs/product-technical-gap-baseline.md
printf '%s\n' '=== Login route context ==='
grep -n -A45 -B20 '/api/auth/login' server/app.mjs || true
printf '%s\n' '=== Password hash and verification context ==='
grep -n -A75 -B15 'export function hashPassword\|export function verifyPassword' server/auth.mjs || true
printf '%s\n' '=== API smoke login setup and assertions ==='
grep -n -A65 -B10 '/api/auth/signup\|/api/auth/login\|SCOPEWEAVE_DB\|elapsed\|performance\|hrtime' tests/api/smoke.mjs || true
printf '%s\n' '=== Unit password-test outline and content ==='
fd -a '^auth-password\.test\.mjs$' tests . -x sh -c '
echo "--- $1 ---"
grep -n -A100 -B15 "verifyPassword\|hashPassword\|/api/auth/login\|missing\|elapsed\|performance\|hrtime" "$1" || true
' sh {} \;
printf '%s\n' '=== All password-verification call sites and timing assertions ==='
rg -n -C 6 --glob '*.mjs' --glob '*.js' \
'\bverifyPassword\s*\(|\bscryptSync\s*\(|\btimingSafeEqual\s*\(|\b(?:performance|hrtime)\b|elapsed' \
server tests
printf '%s\n' '=== Credential schema and migration references ==='
rg -n -C 4 --glob '*.mjs' --glob '*.js' \
'password_hash|CREATE TABLE.*users|INSERT INTO users|UPDATE users' \
server testsLength of output: 81722 🏁 Script executed: #!/bin/bash
set -euo pipefail
printf '%s\n' '=== Static dummy credential sizes ==='
dummy_salt="$(grep -E "salt = '0+" server/auth.mjs | sed -E "s/.*'([^']+)'.*/\1/")"
dummy_hash="$(grep -E "hash = '0+" server/auth.mjs | sed -E "s/.*'([^']+)'.*/\1/")"
printf 'dummy_salt_chars=%s\ndummy_hash_hex_chars=%s\ndummy_hash_bytes=%s\n' \
"${`#dummy_salt`}" "${`#dummy_hash`}" "$(( ${`#dummy_hash`} / 2 ))"
printf '%s\n' '=== Static malformed-storage branch analysis ==='
awk '
/export function verifyPassword\(pw, stored\)/ { active=1 }
active { print NR ":" $0 }
active && /^}/ { exit }
' server/auth.mjs
printf '%s\n' \
'Representative stored values:' \
" null -> dummy branch (empty salt/hash)" \
" 'salt:' -> dummy branch (empty hash)" \
" 'salt:zz' -> non-dummy branch; decoded hash is not 64 bytes" \
" 'salt:00' -> non-dummy branch; decoded hash is 1 byte" \
" 'salt:<128 hex>:extra' -> non-dummy branch; extra field is ignored"
printf '%s\n' '=== Confirm removed wall-clock assertion in PR range ==='
git diff --no-ext-diff "$base...$head" -- tests/unit/auth-password.test.mjs 2>/dev/null || true
rg -n -i -C 3 --glob '*.mjs' --glob '*.js' \
'Date\.now\s*\(|process\.hrtime|performance\.now|elapsed.{0,60}(?:assert|equal|less|greater)|(?:assert|equal|less|greater).{0,60}elapsed' \
tests server || true
printf '%s\n' '=== Current-head PR checks ==='
gh pr view 674 --repo ContextualWisdomLab/scopeweave \
--json headRefOid,isDraft,statusCheckRollup \
--jq '{headRefOid, isDraft, statusCheckRollup: [.statusCheckRollup[] | {name, status, conclusion}]}'Length of output: 3261 🏁 Script executed: #!/bin/bash
set -euo pipefail
head="efb384a3e89b468303804b0b63444c591363f33d"
base="$(git merge-base "$head" develop)"
printf '%s\n' '=== Timing-test replacement diff ==='
git diff --no-ext-diff "$base...$head" -- tests/unit/auth-password.test.mjs
printf '%s\n' '=== Wall-clock assertions under tests and server ==='
rg -n -i -C 3 --glob '*.mjs' --glob '*.js' \
'Date\.now\s*\(|process\.hrtime|performance\.now|elapsed.{0,60}(?:assert|equal|less|greater)|(?:assert|equal|less|greater).{0,60}elapsed' \
tests server || true
printf '%s\n' '=== Current-head PR checks ==='
gh pr view 674 --repo ContextualWisdomLab/scopeweave \
--json headRefOid,isDraft,statusCheckRollup \
--jq '{headRefOid, isDraft, statusCheckRollup: [.statusCheckRollup[] | {name, status, conclusion}]}'Length of output: 12007
FindingP2 — Normalize all malformed stored credentials to the dummy credential
This behavior conflicts with the stated malformed-credential contract in the comment and in the baseline document. Validate the complete persisted format before deriving. A valid stored value must contain exactly one separator, a 32-character hexadecimal salt, and a 128-character hexadecimal hash. Use the fixed-shape dummy salt and hash for every other value. Add unit cases for malformed non-empty storage. Focus review results
🧠 Learnings usedYou are interacting with an AI system. |
요청하신 대로, |
- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 무거운 연산(더미 salt/hash 활용)을 평가하여 타이밍 갭을 좁히도록 수정했습니다 (Buffer 할당 등의 불필요한 과정은 우회함). - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 평가하여 사용자 존재 여부에 따른 명백한 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다.
|
@coderabbitai review Current exact head |
요청하신 부분을 다음과 같이 조치했습니다.
|
- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 무거운 연산(더미 salt/hash 활용)을 평가하여 타이밍 갭을 좁히도록 수정했습니다 (Buffer 할당 등의 불필요한 과정은 우회함). - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 평가하여 사용자 존재 여부에 따른 명백한 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다. - `docs/product-technical-gap-baseline.md`: 인증 타이밍 공격 방지가 완전한 constant-time 알고리즘 적용은 아니며 discrepancy factor(격차 요소)를 좁히는 수준임을 명시했습니다. - `.jules/sentinel.md`: 학습 내용을 업데이트했습니다.
🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
head="f641ac54f4e8f5b35fd98c66d2752ec3c99aa13a"
repo="ContextualWisdomLab/scopeweave"
echo '=== Exact head verification ==='
printf 'checked_out_head='
git rev-parse HEAD
git cat-file -t "$head"
git merge-base --is-ancestor "$head" HEAD && echo 'requested_commit_is_ancestor_of_checked_out_head=true'
git diff --exit-code "$head" HEAD || true
echo '=== PR range and changed paths ==='
base="$(git merge-base "$head" develop)"
printf 'base=%s\nhead=%s\n' "$base" "$head"
git log --oneline --decorate "$base..$head"
git diff --no-ext-diff --stat "$base...$head"
git diff-tree --no-commit-id --name-status -r "$base...$head"
echo '=== Focused PR diff ==='
git diff --no-ext-diff --find-renames "$base...$head" -- \
server/app.mjs server/auth.mjs \
tests/api/smoke.mjs tests/unit/auth-password.test.mjs \
docs/product-technical-gap-baseline.md .jules/sentinel.md
echo '=== Focused file outlines ==='
for file in server/app.mjs server/auth.mjs tests/api/smoke.mjs tests/unit/auth-password.test.mjs; do
if [ -f "$file" ]; then
echo "--- $file ---"
ast-grep outline "$file" --items all --view expanded || true
fi
done
echo '=== Focused current-head source and test context ==='
for file in \
server/app.mjs server/auth.mjs \
tests/api/smoke.mjs tests/unit/auth-password.test.mjs \
docs/product-technical-gap-baseline.md .jules/sentinel.md; do
if [ -f "$file" ]; then
echo "--- $file ---"
nl -ba "$file" | sed -n '1,360p'
fi
done
echo '=== Verification call sites, timing assertions, and dummy credential handling ==='
rg -n -C 6 --glob '*.mjs' --glob '*.js' \
'\bverifyPassword\s*\(|\bscryptSync\s*\(|\btimingSafeEqual\s*\(|Date\.now\s*\(|process\.hrtime|performance\.now|elapsed|dummy|password_hash' \
server tests
echo '=== Documentation claims and current-head acceptance ==='
rg -n -i -C 5 \
'constant.time|constant-time|discrepancy|factor|timing|scrypt|dummy|acceptance|current.head|current head|sentinel' \
docs .jules 2>/dev/null || true
echo '=== Sentinel history and restoration evidence ==='
git log --oneline --follow -- .jules/sentinel.md
git status --short
git show --no-ext-diff --format=fuller "$head" -- .jules/sentinel.md
git diff --no-ext-diff "$base...$head" -- .jules/sentinel.md
echo '=== Current PR status checks ==='
gh pr view 674 --repo "$repo" \
--json headRefOid,isDraft,mergeStateStatus,statusCheckRollup \
--jq '{headRefOid,isDraft,mergeStateStatus,statusCheckRollup:[.statusCheckRollup[]|{name,status,conclusion}]}'Length of output: 29542 🏁 Script executed: #!/bin/bash
set -euo pipefail
head="f641ac54f4e8f5b35fd98c66d2752ec3c99aa13a"
base="$(git merge-base "$head" develop)"
repo="ContextualWisdomLab/scopeweave"
echo '=== Target commit identity ==='
git show -s --format='commit=%H%nparents=%P%nsubject=%s' "$head"
printf 'base=%s\n' "$base"
echo '=== Exact target contents ==='
for file in \
server/app.mjs server/auth.mjs \
tests/api/smoke.mjs tests/unit/auth-password.test.mjs \
docs/product-technical-gap-baseline.md .jules/sentinel.md; do
echo "--- $file @ $head ---"
if git cat-file -e "$head:$file" 2>/dev/null; then
git show "$head:$file" | sed -n '1,380p'
else
echo '[file absent]'
fi
done
echo '=== Exact target patch from protected base ==='
git diff --no-ext-diff --find-renames "$base...$head" -- \
server/app.mjs server/auth.mjs tests/api/smoke.mjs \
tests/unit/auth-password.test.mjs docs/product-technical-gap-baseline.md \
.jules/sentinel.md
echo '=== Sentinel restoration commits ==='
for commit in 4c7f4d3 "$head"; do
echo "--- $commit ---"
git show --no-ext-diff --format='commit=%H%nparents=%P%nsubject=%s' --stat "$commit" -- .jules/sentinel.md
git show --no-ext-diff --format= "$commit" -- .jules/sentinel.md
done
echo '=== Exact-head static indicators ==='
echo '-- missing-user verifier call and 401 ordering --'
git show "$head:server/app.mjs" | grep -n -E -C 5 'if \(!u\)|verifyPassword\(password, null\)|invalid credentials'
echo '-- verifier boundary --'
git show "$head:server/auth.mjs" | grep -n -E -C 8 'export function verifyPassword|scryptSync|timingSafeEqual|Missing-user|constant-time|dummy'
echo '-- elapsed-time constructs in target test files --'
for file in tests/api/smoke.mjs tests/unit/auth-password.test.mjs; do
printf '%s: ' "$file"
git show "$head:$file" | grep -n -E 'Date\.now|process\.hrtime|performance\.now|elapsed|duration|setTimeout' || true
done
echo '-- baseline acceptance and scope claims --'
git show "$head:docs/product-technical-gap-baseline.md" | grep -n -i -E -C 3 \
'current authority|current-head|required checks|independent|constant.time|constant-time|discrepancy|factor|acceptance|dummy|scrypt'
echo '=== PR metadata and checks ==='
gh pr view 674 --repo "$repo" \
--json headRefOid,isDraft,mergeStateStatus,statusCheckRollup \
--jq '{headRefOid,isDraft,mergeStateStatus,statusCheckRollup:[.statusCheckRollup[]|{name,status,conclusion}]}'
echo '=== Existing open CodeRabbit review threads ==='
gh api "repos/$repo/pulls/674/comments?per_page=100" \
--jq '.[] | select(.user.login == "coderabbitai[bot]" or .user.login == "coderabbitai") | {path, line, body, created_at}'Length of output: 104759
FindingP2 — Non-empty malformed stored credentials still bypass dummy credential handling
This conflicts with the function documentation, which says malformed stored values fail closed, and with the baseline statement that malformed storage uses fixed-shape dummy material. Validate the complete persisted format before deriving. For all invalid values, use the fixed dummy salt and fixed-size dummy hash. Requested focus results
GitHub now reports PR 🧠 Learnings used
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- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 무거운 연산(더미 salt/hash 활용)을 평가하여 타이밍 갭을 좁히도록 수정했습니다 (Buffer 할당 등의 불필요한 과정은 우회함). - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 평가하여 사용자 존재 여부에 따른 명백한 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다. - `docs/product-technical-gap-baseline.md`: 인증 타이밍 공격 방지가 완전한 constant-time 알고리즘 적용은 아니며 discrepancy factor(격차 요소)를 좁히는 수준임을 명시했습니다. - `.jules/sentinel.md`: 학습 내용을 업데이트했습니다.
- `server/auth.mjs`: `verifyPassword` 함수가 저장된 해시가 없거나 잘못된 경우에도 무거운 연산(더미 salt/hash 활용)을 평가하여 타이밍 갭을 좁히도록 수정했습니다 (Buffer 할당 등의 불필요한 과정은 우회함). - `server/app.mjs`: `/api/auth/login` 엔드포인트에서 사용자가 존재하지 않더라도 `verifyPassword`를 평가하여 사용자 존재 여부에 따른 명백한 응답 시간 차이를 제거했습니다. - `tests/api/smoke.mjs`: 존재하지 않는 사용자에 대한 로그인 실패 검증 테스트를 추가했습니다. - `docs/product-technical-gap-baseline.md`: 인증 타이밍 공격 방지가 완전한 constant-time 알고리즘 적용은 아니며 discrepancy factor(격차 요소)를 좁히는 수준임을 명시했습니다. - `.jules/sentinel.md`: 학습 내용을 업데이트했습니다.
1 participant
Finding
Protected
develop@2c328875e00e86537df3e965170be80532571cadrejects a missing user before any password-verification work. A lookup hit with a wrong string password performsscryptSync, while a lookup miss can skip that work. This is a user-enumeration discrepancy factor; it is not evidence that the complete HTTP endpoint is constant-time or that a remotely exploitable timing threshold has been measured.OWASP's Authentication Cheat Sheet warns about processing-time discrepancy factors caused by authentication quick exits and recommends equivalent processing for invalid usernames/passwords.
Repair
server/app.mjs: the missing-user branch invokesverifyPassword(password, null)before returning the generic401; existing-user invalid credentials retain the same public response.server/auth.mjs: a missing/malformed stored credential substitutes fixed-shape dummy salt material and performs scrypt before failing closed for string passwords.tests/api/smoke.mjs: a fresh in-memory database exercises a deterministic missing-user HTTP path.tests/unit/auth-password.test.mjs: a deterministic causal regression requires the missing-user branch to perform dummy verification before its401. Host/scheduler-dependent elapsed-time thresholds are deliberately excluded.docs/product-technical-gap-baseline.md: records RED/GREEN/release evidence and the DDD ownership boundary: Keyverse is canonical identity backend; ScopeWeave's local password/JWT path is a legacy compatibility boundary to migrate behind a released Keyverse contract/ACL after this repair..jules/sentinel.md: restored byte-for-byte to the prior verified authority after an intervening descendant added an event-specific timing doctrine whose exploitability/constant-time wording exceeded retained evidence.The earlier CodeRabbit fixed-email finding was verified against the fixture and resolved as non-reproducible: before the lookup-miss assertion, only
a@b.comhas been successfully persisted in the fresh in-memory DB.Intervening-delta repair
After verified semantic head
5631811c9401589910510064d3f8f42616334d9d, ordinary descendants removed the causal lookup-miss regression, collapsed the code-current baseline into a premature Accepted statement, and appended the unsupported Sentinel doctrine. They did not change the production auth repair. I preserved the descendant lineage and repaired it with ordinary commits only; no force push or destructive rebase was used.5631811...and the current head now have identical trees, while the protected-base delta remains the five intended product/test/docs files.Evidence and acceptance
Current exact head:
551aa95d2c2638b30ac6cff5fea1d132a8791f91. Deterministic lookup-miss regression commit:d49fcba86cd77bbfba939fa7a8e15def63838ad0.Protected-base compare: ahead 18 / behind 0; effective files are
server/app.mjs,server/auth.mjs,tests/api/smoke.mjs,tests/unit/auth-password.test.mjs, anddocs/product-technical-gap-baseline.md.The PR remains Draft. Do not reuse predecessor check receipts. GREEN requires this exact SHA to pass
npm run test:unit,npm run test:api, repository-requiredunit-and-api,cloud-e2e,Analyze (javascript-typescript),Analyze (python), andproperty fuzz, plus current-head independent review with no unresolved valid finding. Merge must be a normal protected-branch merge.At the latest exact-head read, CodeRabbit and Devin Review statuses are successful, while Server Tests, Fuzz, SAST Semgrep, Security Scan, and CodeQL PR for
551aa95d...are not yet terminal. Those current-head gates remain outstanding.This PR does not establish local credential authority as the target architecture. The successor gap is a released, immutable Keyverse API/client/schema migration with no source copy, cross-service SQL, or mutable sibling-head dependency, plus existing-credential migration/recovery and rollback evidence.
No quantitative latency or severity claim is made until representative endpoint-level measurement is retained. A future quantitative claim must compare repeated existing-user/wrong-password and missing-user distributions under equivalent runtime/network conditions rather than infer endpoint constant-time behavior from
timingSafeEqual, dummy scrypt, or a single elapsed-time threshold.Traceability
crypto.timingSafeEqual. Node.js documentation. Retrieved September 8, 2026, from https://nodejs.org/docs/latest-v22.x/api/crypto.html#cryptotimingsafeequala-b