Open actionable advisories and recorded vendor fixes. This public package view has no inventory attached and cannot establish whether your deployment is affected. A vendor fix never resolves your finding; verify your installed version and the source guidance.
Open advisories
2 actionable advisories, newest first. Withdrawn advisories and news are excluded. Coverage is partial.
Impact Events retrieved from a remote homeserver using /getmissingevents did not have their signatures verified correctly. This could potentially allow a remote homeserver to provide invalid/modified events to Dendrite via this endpoint. Note that this does not apply to events retrieved through other endpoints (e.g. /event, /state) as they have been correctly verified. Homeservers that have federation disabled are not vulnerable. Patches The problem has been fixed in Dendrite 0.9.8. Workarounds There are no workarounds. Special thanks Tulir Asokan, who spotted the issue originally.
Recommended action: Upgrade to 0.9.8 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.
Impact The power level parsing within gomatrixserverlib was failing to parse the "eventsdefault" key of the m.room.powerlevels event, defaulting the event default power level to zero in all cases. In rooms where the "eventsdefault" power level had been changed, this could result in events either being incorrectly authorised or rejected by Dendrite servers. Patches gomatrixserverlib contains a fix as of commit 723fd49 and Dendrite 0.9.3 has been updated accordingly. Workarounds Matrix rooms where the "eventsdefault" power level has not been changed from the default of zero are not vulnerable. For more information If you have any questions or comments about this advisory, e-mail us at security@matrix.org.
Recommended action: Upgrade to 0.9.3 or later, then redeploy and verify.A vendor fix does not resolve your finding until you verify it in your own systems.