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Alpine Linux: CVE-2021-40823: Authentication Bypass by Spoofing

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Alpine Linux: CVE-2021-40823: Authentication Bypass by Spoofing

Severity
4
CVSS
(AV:N/AC:M/Au:N/C:P/I:N/A:N)
Published
09/13/2021
Created
08/23/2024
Added
08/22/2024
Modified
10/02/2024

Description

A logic error in the room key sharing functionality of matrix-js-sdk (aka Matrix Javascript SDK) before 12.4.1 allows a malicious Matrix homeserver present in an encrypted room to steal room encryption keys (via crafted Matrix protocol messages) that were originally sent by affected Matrix clients participating in that room. This allows the homeserver to decrypt end-to-end encrypted messages sent by affected clients.

Solution(s)

  • alpine-linux-upgrade-riot-web
  • alpine-linux-upgrade-element-web

References

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