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Alpine Linux: CVE-2023-32323: Improper Input Validation

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Alpine Linux: CVE-2023-32323: Improper Input Validation

Severity
4
CVSS
(AV:N/AC:L/Au:S/C:N/I:N/A:P)
Published
05/26/2023
Created
08/23/2024
Added
08/22/2024
Modified
10/02/2024

Description

Synapse is an open-source Matrix homeserver written and maintained by the Matrix.org Foundation. A malicious user on a Synapse homeserver X with permission to create certain state events can disable outbound federation from X to an arbitrary homeserver Y. Synapse instances with federation disabled are not affected. In versions of Synapse up to and including 1.73, Synapse did not limit the size of `invite_room_state`, meaning that it was possible to create an arbitrarily large invite event. Synapse 1.74 refuses to create oversized `invite_room_state` fields. Server operators should upgrade to Synapse 1.74 or newer urgently.

Solution(s)

  • alpine-linux-upgrade-synapse

References

  • https://attackerkb.com/topics/cve-2023-32323
  • CVE - 2023-32323
  • https://security.alpinelinux.org/vuln/CVE-2023-32323
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