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Reduce CPU overhead of change password endpoint #16264

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merged 3 commits into from
Sep 8, 2023
Merged

Reduce CPU overhead of change password endpoint #16264

merged 3 commits into from
Sep 8, 2023

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erikjohnston
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Due UIA it is valid for a client to sit hitting the endpoint repeatedly (if e.g. waiting for the user to click a link in an email). Currently, if the request includes the new password then we'll hash it each and every time we the request, which is expensive.

Instead, we only calculate and store the password hash if we haven't done it previously. When the request finally succeeds and includes password again, we will still hash and use that.

Reviewable commit-by-commit.

The first commit is simply a refactor.

@erikjohnston erikjohnston marked this pull request as ready for review September 6, 2023 17:10
@erikjohnston erikjohnston requested a review from a team as a code owner September 6, 2023 17:10
clokep
clokep approved these changes Sep 7, 2023
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I don't really love putting this much code into the try/except block, but not a blocker.

Note that this is a change in behavior (although a very silly one):

  1. The client sends on the first request new_password: foo.
  2. The client completes whatever UI auth stages it needs to, during the second stage it sets new_password: bar
  3. The client sends the final request without a password.

Previously we would use foo, now we'll use bar.

Honestly though if your client is doing that then...I don't know what to say.

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clokep commented Sep 7, 2023

(I should also note that this is a spot that has broken clients in the past.)

@erikjohnston erikjohnston merged commit d23c394 into develop Sep 8, 2023
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@erikjohnston erikjohnston deleted the erikj/password_reset branch September 8, 2023 12:06
yingziwu added a commit to yingziwu/synapse that referenced this pull request Oct 3, 2023
@yingziwu
Merge tag 'v1.93.0' into develop
e159835 
No significant changes since 1.93.0rc1.

The following issues are fixed in 1.93.0 (and RCs).

- [GHSA-4f74-84v3-j9q5](GHSA-4f74-84v3-j9q5) / [CVE-2023-41335](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-41335) — Low Severity

  Temporary storage of plaintext passwords during password changes.

- [GHSA-7565-cq32-vx2x](GHSA-7565-cq32-vx2x) / [CVE-2023-42453](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42453) — Low Severity

  Improper validation of receipts allows forged read receipts.

See the advisories for more details. If you have any questions, email [email protected].

- Add automatic purge after all users have forgotten a room. ([\matrix-org#15488](matrix-org#15488))
- Restore room purge/shutdown after a Synapse restart. ([\matrix-org#15488](matrix-org#15488))
- Support resolving homeservers using `matrix-fed` DNS SRV records from [MSC4040](matrix-org/matrix-spec-proposals#4040). ([\matrix-org#16137](matrix-org#16137))
- Add the ability to use `G` (GiB) and `T` (TiB) suffixes in configuration options that refer to numbers of bytes. ([\matrix-org#16219](matrix-org#16219))
- Add span information to requests sent to appservices. Contributed by MTRNord. ([\matrix-org#16227](matrix-org#16227))
- Add the ability to enable/disable registrations when using CAS. Contributed by Aurélien Grimpard. ([\matrix-org#16262](matrix-org#16262))
- Allow the `/notifications` endpoint to be routed to workers. ([\matrix-org#16265](matrix-org#16265))
- Enable users to easily unsubscribe to notifications emails via the `List-Unsubscribe` header. ([\matrix-org#16274](matrix-org#16274))
- Report whether a user is `locked` in the [List Accounts admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#list-accounts), and exclude locked users by default. ([\matrix-org#16328](matrix-org#16328))

- Fix a long-standing bug where multi-device accounts could cause high load due to presence. ([\matrix-org#16066](matrix-org#16066), [\matrix-org#16170](matrix-org#16170), [\matrix-org#16171](matrix-org#16171), [\matrix-org#16172](matrix-org#16172), [\matrix-org#16174](matrix-org#16174))
- Fix a long-standing bug where appservices using [MSC2409](matrix-org/matrix-spec-proposals#2409) to receive `to_device` messages would only get messages for one user. ([\matrix-org#16251](matrix-org#16251))
- Fix bug when using workers where Synapse could end up re-requesting the same remote device repeatedly. ([\matrix-org#16252](matrix-org#16252))
- Fix long-standing bug where we kept re-requesting a remote server's key repeatedly, potentially causing delays in receiving events over federation. ([\matrix-org#16257](matrix-org#16257))
- Avoid temporary storage of sensitive information. ([\matrix-org#16272](matrix-org#16272))
- Fix bug introduced in Synapse 1.49.0 when using dehydrated devices ([MSC2697](matrix-org/matrix-spec-proposals#2697)) and refresh tokens. Contributed by Hanadi. ([\matrix-org#16288](matrix-org#16288))
- Fix a long-standing bug where invalid receipts would be accepted. ([\matrix-org#16327](matrix-org#16327))
- Use standard name for UTF-8 charset in emails. ([\matrix-org#16329](matrix-org#16329))
- Don't try refetching device lists for users on remote hosts that are marked as "down". ([\matrix-org#16298](matrix-org#16298))

- Fix typos in the documentation. ([\matrix-org#16282](matrix-org#16282))
- Link to the Alpine Linux community package for Synapse. ([\matrix-org#16304](matrix-org#16304))
- Use string for `federation_client_minimum_tls_version` documentation examples. Contributed by @jcgruenhage. ([\matrix-org#16353](matrix-org#16353))

- Allow modules to delete rooms. ([\matrix-org#15997](matrix-org#15997))
- Add GCC and GNU Make to the Nix flake development environment so that `ruff` can be compiled. ([\matrix-org#16090](matrix-org#16090), [\matrix-org#16263](matrix-org#16263))
- Fix type checking when using the new version of Twisted. ([\matrix-org#16235](matrix-org#16235))
- Delete device messages asynchronously and in staged batches using the task scheduler. ([\matrix-org#16240](matrix-org#16240), [\matrix-org#16311](matrix-org#16311), [\matrix-org#16312](matrix-org#16312), [\matrix-org#16313](matrix-org#16313))
- Bump minimum supported Rust version to 1.61.0. ([\matrix-org#16248](matrix-org#16248))
- Update rust to version 1.71.1 in the nix development environment. ([\matrix-org#16260](matrix-org#16260))
- Simplify server key storage. ([\matrix-org#16261](matrix-org#16261))
- Reduce CPU overhead of change password endpoint. ([\matrix-org#16264](matrix-org#16264))
- Stop purging from tables slated for removal. ([\matrix-org#16273](matrix-org#16273))
- Improve type hints. ([\matrix-org#16276](matrix-org#16276), [\matrix-org#16301](matrix-org#16301), [\matrix-org#16325](matrix-org#16325), [\matrix-org#16326](matrix-org#16326))
- Raise `setuptools_rust` version cap to 1.7.0. ([\matrix-org#16277](matrix-org#16277))
- Fix using the new task scheduler causing lots of CPU to be used. ([\matrix-org#16278](matrix-org#16278))
- Upgrade CI run of Python 3.12 from rc1 to rc2. ([\matrix-org#16280](matrix-org#16280))
- Include values in SQL debug when using `execute_values` with Postgres. ([\matrix-org#16281](matrix-org#16281))
- Enable additional linting checks. ([\matrix-org#16283](matrix-org#16283))
- Refactor `receipts_graph` Postgres transactions to stop error messages. ([\matrix-org#16299](matrix-org#16299))
- Small improvements to logging in replication code. ([\matrix-org#16309](matrix-org#16309))
- Remove a reference cycle in background processes. ([\matrix-org#16314](matrix-org#16314))
- Only use literal strings for background process names. ([\matrix-org#16315](matrix-org#16315))
- Refactor `get_user_by_id`. ([\matrix-org#16316](matrix-org#16316))
- Speed up task to delete to-device messages. ([\matrix-org#16318](matrix-org#16318))
- Avoid patching code in tests. ([\matrix-org#16349](matrix-org#16349))
- Test against PostgreSQL 16. ([\matrix-org#16351](matrix-org#16351))

* Bump mypy from 1.4.1 to 1.5.1. ([\matrix-org#16300](matrix-org#16300))
* Bump black from 23.7.0 to 23.9.1. ([\matrix-org#16295](matrix-org#16295))
* Bump docker/build-push-action from 4 to 5. ([\matrix-org#16336](matrix-org#16336))
* Bump docker/login-action from 2 to 3. ([\matrix-org#16339](matrix-org#16339))
* Bump docker/metadata-action from 4 to 5. ([\matrix-org#16337](matrix-org#16337))
* Bump docker/setup-qemu-action from 2 to 3. ([\matrix-org#16338](matrix-org#16338))
* Bump furo from 2023.8.19 to 2023.9.10. ([\matrix-org#16340](matrix-org#16340))
* Bump gitpython from 3.1.32 to 3.1.35. ([\matrix-org#16267](matrix-org#16267), [\matrix-org#16279](matrix-org#16279))
* Bump mypy-zope from 1.0.0 to 1.0.1. ([\matrix-org#16291](matrix-org#16291))
* Bump pillow from 10.0.0 to 10.0.1. ([\matrix-org#16344](matrix-org#16344))
* Bump regex from 1.9.4 to 1.9.5. ([\matrix-org#16233](matrix-org#16233))
* Bump ruff from 0.0.286 to 0.0.290. ([\matrix-org#16342](matrix-org#16342))
* Bump serde_json from 1.0.105 to 1.0.107. ([\matrix-org#16296](matrix-org#16296), [\matrix-org#16345](matrix-org#16345))
* Bump twisted from 22.10.0 to 23.8.0. ([\matrix-org#16235](matrix-org#16235))
* Bump types-pillow from 10.0.0.2 to 10.0.0.3. ([\matrix-org#16293](matrix-org#16293))
* Bump types-setuptools from 68.0.0.3 to 68.2.0.0. ([\matrix-org#16292](matrix-org#16292))
* Bump typing-extensions from 4.7.1 to 4.8.0. ([\matrix-org#16341](matrix-org#16341))
Fizzadar added a commit to beeper/synapse-legacy-fork that referenced this pull request Oct 27, 2023
@Fizzadar
Merge tag 'v1.93.0' into merge-1.93
fef9b3a 
No significant changes since 1.93.0rc1.

The following issues are fixed in 1.93.0 (and RCs).

- [GHSA-4f74-84v3-j9q5](GHSA-4f74-84v3-j9q5) / [CVE-2023-41335](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-41335) — Low Severity

  Temporary storage of plaintext passwords during password changes.

- [GHSA-7565-cq32-vx2x](GHSA-7565-cq32-vx2x) / [CVE-2023-42453](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2023-42453) — Low Severity

  Improper validation of receipts allows forged read receipts.

See the advisories for more details. If you have any questions, email [email protected].

- Add automatic purge after all users have forgotten a room. ([\matrix-org#15488](matrix-org#15488))
- Restore room purge/shutdown after a Synapse restart. ([\matrix-org#15488](matrix-org#15488))
- Support resolving homeservers using `matrix-fed` DNS SRV records from [MSC4040](matrix-org/matrix-spec-proposals#4040). ([\matrix-org#16137](matrix-org#16137))
- Add the ability to use `G` (GiB) and `T` (TiB) suffixes in configuration options that refer to numbers of bytes. ([\matrix-org#16219](matrix-org#16219))
- Add span information to requests sent to appservices. Contributed by MTRNord. ([\matrix-org#16227](matrix-org#16227))
- Add the ability to enable/disable registrations when using CAS. Contributed by Aurélien Grimpard. ([\matrix-org#16262](matrix-org#16262))
- Allow the `/notifications` endpoint to be routed to workers. ([\matrix-org#16265](matrix-org#16265))
- Enable users to easily unsubscribe to notifications emails via the `List-Unsubscribe` header. ([\matrix-org#16274](matrix-org#16274))
- Report whether a user is `locked` in the [List Accounts admin API](https://matrix-org.github.io/synapse/latest/admin_api/user_admin_api.html#list-accounts), and exclude locked users by default. ([\matrix-org#16328](matrix-org#16328))

- Fix a long-standing bug where multi-device accounts could cause high load due to presence. ([\matrix-org#16066](matrix-org#16066), [\matrix-org#16170](matrix-org#16170), [\matrix-org#16171](matrix-org#16171), [\matrix-org#16172](matrix-org#16172), [\matrix-org#16174](matrix-org#16174))
- Fix a long-standing bug where appservices using [MSC2409](matrix-org/matrix-spec-proposals#2409) to receive `to_device` messages would only get messages for one user. ([\matrix-org#16251](matrix-org#16251))
- Fix bug when using workers where Synapse could end up re-requesting the same remote device repeatedly. ([\matrix-org#16252](matrix-org#16252))
- Fix long-standing bug where we kept re-requesting a remote server's key repeatedly, potentially causing delays in receiving events over federation. ([\matrix-org#16257](matrix-org#16257))
- Avoid temporary storage of sensitive information. ([\matrix-org#16272](matrix-org#16272))
- Fix bug introduced in Synapse 1.49.0 when using dehydrated devices ([MSC2697](matrix-org/matrix-spec-proposals#2697)) and refresh tokens. Contributed by Hanadi. ([\matrix-org#16288](matrix-org#16288))
- Fix a long-standing bug where invalid receipts would be accepted. ([\matrix-org#16327](matrix-org#16327))
- Use standard name for UTF-8 charset in emails. ([\matrix-org#16329](matrix-org#16329))
- Don't try refetching device lists for users on remote hosts that are marked as "down". ([\matrix-org#16298](matrix-org#16298))

- Fix typos in the documentation. ([\matrix-org#16282](matrix-org#16282))
- Link to the Alpine Linux community package for Synapse. ([\matrix-org#16304](matrix-org#16304))
- Use string for `federation_client_minimum_tls_version` documentation examples. Contributed by @jcgruenhage. ([\matrix-org#16353](matrix-org#16353))

- Allow modules to delete rooms. ([\matrix-org#15997](matrix-org#15997))
- Add GCC and GNU Make to the Nix flake development environment so that `ruff` can be compiled. ([\matrix-org#16090](matrix-org#16090), [\matrix-org#16263](matrix-org#16263))
- Fix type checking when using the new version of Twisted. ([\matrix-org#16235](matrix-org#16235))
- Delete device messages asynchronously and in staged batches using the task scheduler. ([\matrix-org#16240](matrix-org#16240), [\matrix-org#16311](matrix-org#16311), [\matrix-org#16312](matrix-org#16312), [\matrix-org#16313](matrix-org#16313))
- Bump minimum supported Rust version to 1.61.0. ([\matrix-org#16248](matrix-org#16248))
- Update rust to version 1.71.1 in the nix development environment. ([\matrix-org#16260](matrix-org#16260))
- Simplify server key storage. ([\matrix-org#16261](matrix-org#16261))
- Reduce CPU overhead of change password endpoint. ([\matrix-org#16264](matrix-org#16264))
- Stop purging from tables slated for removal. ([\matrix-org#16273](matrix-org#16273))
- Improve type hints. ([\matrix-org#16276](matrix-org#16276), [\matrix-org#16301](matrix-org#16301), [\matrix-org#16325](matrix-org#16325), [\matrix-org#16326](matrix-org#16326))
- Raise `setuptools_rust` version cap to 1.7.0. ([\matrix-org#16277](matrix-org#16277))
- Fix using the new task scheduler causing lots of CPU to be used. ([\matrix-org#16278](matrix-org#16278))
- Upgrade CI run of Python 3.12 from rc1 to rc2. ([\matrix-org#16280](matrix-org#16280))
- Include values in SQL debug when using `execute_values` with Postgres. ([\matrix-org#16281](matrix-org#16281))
- Enable additional linting checks. ([\matrix-org#16283](matrix-org#16283))
- Refactor `receipts_graph` Postgres transactions to stop error messages. ([\matrix-org#16299](matrix-org#16299))
- Small improvements to logging in replication code. ([\matrix-org#16309](matrix-org#16309))
- Remove a reference cycle in background processes. ([\matrix-org#16314](matrix-org#16314))
- Only use literal strings for background process names. ([\matrix-org#16315](matrix-org#16315))
- Refactor `get_user_by_id`. ([\matrix-org#16316](matrix-org#16316))
- Speed up task to delete to-device messages. ([\matrix-org#16318](matrix-org#16318))
- Avoid patching code in tests. ([\matrix-org#16349](matrix-org#16349))
- Test against PostgreSQL 16. ([\matrix-org#16351](matrix-org#16351))

* Bump mypy from 1.4.1 to 1.5.1. ([\matrix-org#16300](matrix-org#16300))
* Bump black from 23.7.0 to 23.9.1. ([\matrix-org#16295](matrix-org#16295))
* Bump docker/build-push-action from 4 to 5. ([\matrix-org#16336](matrix-org#16336))
* Bump docker/login-action from 2 to 3. ([\matrix-org#16339](matrix-org#16339))
* Bump docker/metadata-action from 4 to 5. ([\matrix-org#16337](matrix-org#16337))
* Bump docker/setup-qemu-action from 2 to 3. ([\matrix-org#16338](matrix-org#16338))
* Bump furo from 2023.8.19 to 2023.9.10. ([\matrix-org#16340](matrix-org#16340))
* Bump gitpython from 3.1.32 to 3.1.35. ([\matrix-org#16267](matrix-org#16267), [\matrix-org#16279](matrix-org#16279))
* Bump mypy-zope from 1.0.0 to 1.0.1. ([\matrix-org#16291](matrix-org#16291))
* Bump pillow from 10.0.0 to 10.0.1. ([\matrix-org#16344](matrix-org#16344))
* Bump regex from 1.9.4 to 1.9.5. ([\matrix-org#16233](matrix-org#16233))
* Bump ruff from 0.0.286 to 0.0.290. ([\matrix-org#16342](matrix-org#16342))
* Bump serde_json from 1.0.105 to 1.0.107. ([\matrix-org#16296](matrix-org#16296), [\matrix-org#16345](matrix-org#16345))
* Bump twisted from 22.10.0 to 23.8.0. ([\matrix-org#16235](matrix-org#16235))
* Bump types-pillow from 10.0.0.2 to 10.0.0.3. ([\matrix-org#16293](matrix-org#16293))
* Bump types-setuptools from 68.0.0.3 to 68.2.0.0. ([\matrix-org#16292](matrix-org#16292))
* Bump typing-extensions from 4.7.1 to 4.8.0. ([\matrix-org#16341](matrix-org#16341))

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# Conflicts:
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@erikjohnston @clokep