CVE-2024-47824CWE-200

Malicious homeservers can steal message keys when the matrix-react-sdk user invites another user to a room

High · published October 15, 2024

CVSS v4.0
8.7
EPSS
1%
Percentile
50.8
In the wild
Unconfirmed
What it is

matrix-react-sdk is react-based software development kit for inserting a Matrix chat/VOIP client into a web page. Starting in version 3.18.0 and before 3.102.0, matrix-react-sdk allows a malicious homeserver to potentially steal message keys for a room when a user invites another user to that room, via injection of a malicious device controlled by the homeserver. This is possible because matrix-react-sdk before 3.102.0 shared historical message keys on invite. Version 3.102.0 fixes this issue by disabling sharing message keys on invite by removing calls to the vulnerable functionality. No known workarounds are available.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
EPSS
0.00656 · 50.8th percentile
Weakness
CWE-200 · Exposure of Sensitive Information to an Unauthorized Actor
Published
2024-10-15T15:40Z
EPSS history
Timeline
  • 15 OCT 15:40Z
    Malicious homeservers can steal message keys when the matrix-react-sdk user invites another user to a room
    cvelistv5