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| author | Neil Johnson <neil@fragile.org.uk> | 2018-05-01 18:53:56 +0100 |
|---|---|---|
| committer | Neil Johnson <neil@fragile.org.uk> | 2018-05-01 18:53:56 +0100 |
| commit | 2414178ed60faecc67180b233f56055b7e2c5b99 (patch) | |
| tree | 464aa4e585784c2bf5b74765813e4ba09193e7b2 /CHANGES.rst | |
| parent | Merge branch 'release-v0.28.1' into develop (diff) | |
| parent | fix conflict in changelog from previous release (diff) | |
| download | synapse-2414178ed60faecc67180b233f56055b7e2c5b99.tar.xz | |
Merge branch 'master' into develop
Diffstat (limited to 'CHANGES.rst')
| -rw-r--r-- | CHANGES.rst | 23 |
1 files changed, 22 insertions, 1 deletions
diff --git a/CHANGES.rst b/CHANGES.rst index 40d13c6484..49dac25ca0 100644 --- a/CHANGES.rst +++ b/CHANGES.rst @@ -1,5 +1,26 @@ +Changes in synapse v0.28.1 (2018-05-01) +======================================= + +SECURITY UPDATE + +* Clamp the allowed values of event depth received over federation to be + [0, 2**63 - 1]. This mitigates an attack where malicious events + injected with depth = 2**63 - 1 render rooms unusable. Depth is used to + determine the cosmetic ordering of events within a room, and so the ordering + of events in such a room will default to using stream_ordering rather than depth + (topological_ordering). + + This is a temporary solution to mitigate abuse in the wild, whilst a long solution + is being implemented to improve how the depth parameter is used. + + Full details at + https://docs.google.com/document/d/1I3fi2S-XnpO45qrpCsowZv8P8dHcNZ4fsBsbOW7KABI/edit# + +* Pin Twisted to <18.4 until we stop using the private _OpenSSLECCurve API. + + Changes in synapse v0.28.0 (2018-04-26) -=========================================== +======================================= Bug Fixes: |