[kixelated]

Problem

A targeted review raised two unconfirmed concerns: CBC padding failures could become an oracle in a consumer, and rind-rustls uses unwrap for key and IV lengths. Neither has a demonstrated reachable security defect.

Approach

• Add separate m3 quests to trace current CBC consumers and rustls provider input provenance.
• Require reproduction before any fix; close each quest with evidence if the concern is unreachable.
• Clarify m3's goal to include work deferred by priority, as its existing assurance quests already do.

Impact

• No public API or wire change.

Alternatives

• Harden both APIs without proving reachability: rejected because CBC's unauthenticated behavior was deliberate in moq-dev/rind#381, and the rustls trait contract still needs investigation.
• Fold these into the coverage audit or timing tests: rejected because those track primitive checks, not consumer misuse or provider input provenance.

Decisions

• ✅ Investigate both concerns and fix only reproduced defects (rejected: harden both APIs now; investigate only one).
• ✅ Put both quests in m3 (rejected: m1; split milestones).
• ✅ Consider broader rind-specific API hardening after the investigations, if their evidence warrants it.

Follow-ups

• Revisit API hardening only if either investigation identifies a rind-specific risk.

Models

• Size: S
• Implementer: Codex, gpt-6-sol, medium effort

Review

mechanical fix by codex, gpt-6.1-sol, medium effort: Merged base and redirected two completed coverage-audit links to TESTING.md; ran git diff --check and just ci base (bench tests, quest check, shellcheck, nixfmt). (head 0170b71)

Rewritten by quest review after each round.

• Reviewer: Codex, gpt-6.1-sol, medium effort
• Session: 01a1b73c-6d53-70a2-95ce-6eab53268139, round 1
• Head: f3c7286
• Base: origin/main at 165545e
• Score: 10/10, The specified diff adds two clearly scoped security-investigation quests and updates their milestone index, with no executable changes or actionable defects under the repository's review rules.
• Findings: none

(Written by GPT-6 Sol with medium effort)

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• Review profile: CHILL
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[moq-bot]

quest land watch: the merge queue removed this pull request at f3c7286 because its merge_group build failed (failed_checks).

The land fixer works on it in the background, and the watcher re-enqueues it at the back of the queue once it is fixed or judged flaky, or hands it back here with what it needs.

Queue / Queue build / Build (job) failure at step Check and test the merge group:

…/github-runner-work/rind/rind/.git/modules/thirdparty/cavp/config	remote.origin.url
Entering 'thirdparty/cctv'
file:/var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cctv/config	remote.origin.url
Entering 'thirdparty/wycheproof'
file:/var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/wycheproof/config	remote.origin.url
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cavp/config --name-only --get-regexp ^includeIf\.gitdir:
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cctv/config --name-only --get-regexp ^includeIf\.gitdir:
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/wycheproof/config --name-only --get-regexp ^includeIf\.gitdir:
Removing credentials config '/var/cache/github-runner-work/_temp/git-credentials-1ae452da-6ac3-4afa-91b3-7a9d2a63f0bf.config'
##[endgroup]
Prepare all required actions
##[group]Run ./.github/actions/vectors
env:
  BASE: 42d67a01d23ba158f25686fdf52c3673b865cddf
##[endgroup]
##[start-action display=Run git submodule update --init --depth 1 thirdparty/cavp thirdparty/cctv thirdparty/wycheproof;id=__self.__run]
##[group]Run git submodule update --init --depth 1 thirdparty/cavp thirdparty/cctv thirdparty/wycheproof
�[36;1mgit submodule update --init --depth 1 thirdparty/cavp thirdparty/cctv thirdparty/wycheproof�[0m
shell: /nix/store/1mv3qz005gkbalxfghk4y3s8ayv4d2dl-bash-interactive-5.3p15/bin/bash --noprofile --norc -e -o pipefail {0}
env:
  BASE: 42d67a01d23ba158f25686fdf52c3673b865cddf
##[endgroup]
##[end-action id=__self.__run;outcome=success;conclusion=success;duration_ms=48]
##[group]Run nix develop --command quest gate just ci "$BASE"
�[36;1mnix develop --command quest gate just ci "$BASE"�[0m
shell: /nix/store/1mv3qz005gkbalxfghk4y3s8ayv4d2dl-bash-interactive-5.3p15/bin/bash -e {0}
env:
  BASE: 42d67a01d23ba158f25686fdf52c3673b865cddf
##[endgroup]
CI_STRICT=1 sh/dispatch.sh ci "$BASE"
changed: base 42d67a01d23ba158f25686fdf52c3673b865cddf
==> ci bench
..................
----------------------------------------------------------------------
Ran 18 tests in 0.096s

OK
==> ci quest
quest: quest/m3/cbc-padding-oracle.md:15: link does not resolve: /quest/m3/confidence/audit.md
quest: quest/m3/rustls-provider-panics.md:15: link does not resolve: /quest/m3/confidence/audit.md
error: recipe `ci` failed on line 21 with exit code 1
##[error]Process completed with exit code 1.
Post job cleanup.
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git version
git version 2.55.0
Temporarily overriding HOME='/var/cache/github-runner-work/_temp/193fb23e-62df-44de-b93d-7f16cf9569df' before making global git config changes
Adding repository directory to the temporary git global config as a safe directory
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --global --add safe.directory /var/cache/github-runner-work/rind/rind
Removing SSH command configuration
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --local --name-only --get-regexp core\.sshCommand
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git submodule foreach --recursive sh -c "git config --local --name-only --get-regexp 'core\.sshCommand' && git config --local --unset-all 'core.sshCommand' || :"
Entering 'thirdparty/cavp'
Entering 'thirdparty/cctv'
Entering 'thirdparty/wycheproof'
Removing HTTP extra header
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --local --name-only --get-regexp http\.https\:\/\/github\.com\/\.extraheader
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git submodule foreach --recursive sh -c "git config --local --name-only --get-regexp 'http\.https\:\/\/github\.com\/\.extraheader' && git config --local --unset-all 'http.https://github.com/.extraheader' || :"
Entering 'thirdparty/cavp'
Entering 'thirdparty/cctv'
Entering 'thirdparty/wycheproof'
Removing includeIf entries pointing to credentials config files
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --local --name-only --get-regexp ^includeIf\.gitdir:
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git submodule foreach --recursive git config --local --show-origin --name-only --get-regexp remote.origin.url
Entering 'thirdparty/cavp'
file:/var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cavp/config	remote.origin.url
Entering 'thirdparty/cctv'
file:/var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cctv/config	remote.origin.url
Entering 'thirdparty/wycheproof'
file:/var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/wycheproof/config	remote.origin.url
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cavp/config --name-only --get-regexp ^includeIf\.gitdir:
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/cctv/config --name-only --get-regexp ^includeIf\.gitdir:
[command]/nix/store/lg46w7hrjx7kylsh6645c9l975i8h43b-git-2.55.0/bin/git config --file /var/cache/github-runner-work/rind/rind/.git/modules/thirdparty/wycheproof/config --name-only --get-regexp ^includeIf\.gitdir:
A job completed hook has been configured by the self-hosted runner administrator
##[group]Run '/nix/store/gx2v6q84b0w43bafm0whkdx93qyxbpps-ci-cache-gc.sh/bin/ci-cache-gc.sh'
shell: /nix/store/1mv3qz005gkbalxfghk4y3s8ayv4d2dl-bash-interactive-5.3p15/bin/bash --noprofile --norc -e -o pipefail {0}
##[endgroup]
evicted 0 objects and 0 action results (0 B logical); 50.0 GiB logical remain
Cleaning up orphan processes

Queue / Queue (job) failure at step Require the build to pass:

Current runner version: '2.338.2'
##[group]Runner Image Provisioner
Hosted Compute Agent
Version: 20261028.624
Commit: 54898b74c23fde5556c9b3c3a2290865feef0dfe
Build Date: 2026-10-28T21:51:42Z
Worker ID: {56d3729a-62c0-4e69-b57e-dc06b5a74dd5}
Region: centralus
Cloud: Azure
##[endgroup]
##[group]Operating System
Ubuntu
24.04.5
LTS
##[endgroup]
##[group]Runner Image
Image: ubuntu-24.04
Version: 20261101.360.1
Included Software: https://github.com/actions/runner-images/blob/ubuntu24/20261101.360/images/ubuntu/Ubuntu2404-Readme.md
Image Release: https://github.com/actions/runner-images/releases/tag/ubuntu24%2F20261101.360
##[endgroup]
##[group]GITHUB_TOKEN Permissions
Contents: read
Metadata: read
##[endgroup]
Secret source: Actions
Cache mode: write
Prepare workflow directory
Prepare all required actions
Complete job name: Queue
##[group]Run [[ "$RESULT" == success ]] || { echo "::error::the queue build ended $RESULT" >&2; exit 1; }
�[36;1m[[ "$RESULT" == success ]] || { echo "::error::the queue build ended $RESULT" >&2; exit 1; }�[0m
shell: /usr/bin/bash -e {0}
env:
  RESULT: failure
##[endgroup]
##[error]the queue build ended failure
##[error]Process completed with exit code 1.
Cleaning up orphan processes

(written by quest land watch)

[moq-bot]

quest land watch: armed auto-merge on this pull request at 0170b71, so it joins the back of the merge queue once its required checks pass, with the land fixer's fix (codex, gpt-6.1-sol, medium effort): Merged base and redirected two completed coverage-audit links to TESTING.md; ran git diff --check and just ci base (bench tests, quest check, shellcheck, nixfmt)..

(written by quest land watch)