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SCA: security update for matrix-js-sdk (GHSA-5w8r-8pgj-5jmf)

high Tenable Cloud Security Plugin ID 411050

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Matrix JavaScript SDK is the Matrix Client-Server software development kit (SDK) for JavaScript. Prior to
 version 19.7.0, an attacker cooperating with a malicious homeserver could interfere with the verification
 flow between two users, injecting its own cross-signing user identity in place of one of the users’
 identities. This would lead to the other device trusting/verifying the user identity under the control of
 the homeserver instead of the intended one. The vulnerability is a bug in the matrix-js-sdk, caused by
 checking and signing user identities and devices in two separate steps, and inadequately fixing the keys
 to be signed between those steps. Even though the attack is partly made possible due to the design
 decision of treating cross-signing user identities as Matrix devices on the server side (with their device
 ID set to the public part of the user identity key), no other examined implementations were vulnerable.
 Starting with version 19.7.0, the matrix-js-sdk has been modified to double check that the key signed is
 the one that was verified instead of just referencing the key by ID. An additional check has been made to
 report an error when one of the device ID matches a cross-signing key. As this attack requires
 coordination between a malicious homeserver and an attacker, those who trust their homeservers do not need
 a particular workaround. (CVE-2022-39250)

See Also

https://github.com/advisories/GHSA-5w8r-8pgj-5jmf

Plugin Details

Severity: High

ID: 411050

Version: Revision 1.6

Type: Local

Family: SCA Checks

Published: 1/23/2025

Updated: 7/2/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Medium

Score: 5

Percentile: 94.39

Vendor

Vendor Severity: High

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2022-39250

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2022

Vulnerability Publication Date: 9/28/2022

Reference Information

CVE: CVE-2022-39250