Insufficient verification of data authenticity in Matrix Javascript SDK - CVE-2022-39250

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Main Vulnerability Database Vulnerabilities #VU67745

Insufficient verification of data authenticity in Matrix Javascript SDK - CVE-2022-39250

Published: September 29, 2022


Vulnerability identifier: #VU67745
CSH Severity: Medium
CVSS v4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2022-39250
CWE-ID: CWE-345
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass SAS verification.

The vulnerability exists due to checking and signing user identities and devices in two separate steps, and inadequately fixing the keys to be signed between these steps. A remote attacker cooperating with a malicious home server can interfere with the verification flow between two users, injecting its own cross-signing user identity in place of one of the users’ identities, leading to the other device trusting/verifying the user identity under the control of the home server instead of the intended one.


Affected software

Matrix Javascript SDK
Oracle Linux
Gentoo Linux
SUSE Manager Server
SUSE Manager Retail Branch Server
SUSE Manager Proxy
Anolis OS
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
SUSE Linux Enterprise Storage
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for IBM z Systems
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Red Hat Enterprise Linux Server - AUS
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Slackware Linux
SUSE Linux Enterprise Desktop
SUSE Linux Enterprise High Performance Computing
SUSE Linux Enterprise Server
SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise Workstation Extension
openSUSE Leap
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
SUSE Linux Enterprise Module for Packagehub Subpackages
thunderbird (Red Hat package)
mozilla-thunderbird
mail-client/thunderbird-bin
mail-client/thunderbird
thunderbird
MozillaThunderbird-translations-other
MozillaThunderbird-translations-common
MozillaThunderbird-debugsource
MozillaThunderbird-debuginfo
MozillaThunderbird
thunderbird (Ubuntu package)
Mozilla Thunderbird

How to mitigate CVE-2022-39250

Install updates from vendor's website.

Matrix Javascript SDK - update to 19.7.0
Mozilla Thunderbird - update to 102.3.1
thunderbird (Red Hat package) - addressed in versions 102.4.0-1.el7_9, 102.4.0-1.el8_1, 102.4.0-1.el8_2, 102.4.0-1.el8_4, 102.4.0-1.el8_6, 102.4.0-1.el9_0
mozilla-thunderbird - update to 102.3.1
mail-client/thunderbird-bin - update to 102.4.0
mail-client/thunderbird - update to 102.4.0
thunderbird - update to 102.4.0-1.0.1
MozillaThunderbird-translations-other - update to 102.4.0-150200.8.85.1
MozillaThunderbird-translations-common - update to 102.4.0-150200.8.85.1
MozillaThunderbird-debugsource - update to 102.4.0-150200.8.85.1
MozillaThunderbird-debuginfo - update to 102.4.0-150200.8.85.1
MozillaThunderbird - update to 102.4.0-150200.8.85.1
thunderbird (Ubuntu package) - addressed in versions 1:102.4.2+build2-0ubuntu0.18.04.1, 1:102.4.2+build2-0ubuntu0.20.04.1, 1:102.4.2+build2-0ubuntu0.22.04.1, 1:102.4.2+build2-0ubuntu0.22.10.1

External References

Related Security Bulletins