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Diffstat (limited to 'CHANGES.md')
| -rw-r--r-- | CHANGES.md | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/CHANGES.md b/CHANGES.md index d655723326..ec79279539 100644 --- a/CHANGES.md +++ b/CHANGES.md @@ -1,3 +1,18 @@ +Synapse 1.2.1 (2019-07-26) +========================== + +Security update +--------------- + +This release includes *four* security fixes: + +- Prevent an attack where a federated server could send redactions for arbitrary events in v1 and v2 rooms. ([\#5767](https://github.com/matrix-org/synapse/issues/5767)) +- Prevent a denial-of-service attack where cycles of redaction events would make Synapse spin infinitely. Thanks to `@lrizika:matrix.org` for identifying and responsibly disclosing this issue. ([0f2ecb961](https://github.com/matrix-org/synapse/commit/0f2ecb961)) +- Prevent an attack where users could be joined or parted from public rooms without their consent. Thanks to @Dylanger for identifying and responsibly disclosing this issue. ([\#5744](https://github.com/matrix-org/synapse/issues/5744)) +- Fix a vulnerability where a federated server could spoof read-receipts from users on other servers. ([\#5743](https://github.com/matrix-org/synapse/issues/5743)) + +Note that Synapse 1.2.0 also contained a security fix which was not correctly identified during the original release. The changelog below is now updated. + Synapse 1.2.0 (2019-07-25) ========================== @@ -16,6 +31,14 @@ Bugfixes Synapse 1.2.0rc1 (2019-07-22) ============================= +Security fixes +-------------- + +This update included a security fix which was initially incorrectly flagged as +a regular bug fix. + +- It was possible for a room moderator to send a redaction for an `m.room.create` event, which would downgrade the room to version 1. Thanks to `/dev/ponies` for identifying and responsibly disclosing this issue! ([\#5701](https://github.com/matrix-org/synapse/issues/5701)) + Features -------- @@ -41,7 +64,6 @@ Bugfixes - Fix bug in #5626 that prevented the original_event field from actually having the contents of the original event in a call to `/relations`. ([\#5654](https://github.com/matrix-org/synapse/issues/5654)) - Fix 3PID bind requests being sent to identity servers as `application/x-form-www-urlencoded` data, which is deprecated. ([\#5658](https://github.com/matrix-org/synapse/issues/5658)) - Fix some problems with authenticating redactions in recent room versions. ([\#5699](https://github.com/matrix-org/synapse/issues/5699), [\#5700](https://github.com/matrix-org/synapse/issues/5700), [\#5707](https://github.com/matrix-org/synapse/issues/5707)) -- Ignore redactions of m.room.create events. ([\#5701](https://github.com/matrix-org/synapse/issues/5701)) Updates to the Docker image |