Input validation error in Matrix Javascript SDK - CVE-2024-50336

Vulnerability identifier: #VU101796

CSH Severity: Medium

CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

CVE-ID: CVE-2024-50336

CWE-ID: CWE-20

Exploitation vector: Remote access

Exploit availability: No public exploit available

Affected software:
Matrix Javascript SDK
Gentoo Linux
Debian Linux
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Desktop 15
SUSE Linux Enterprise High Performance Computing 15
SUSE Linux Enterprise Real Time 15
SUSE Linux Enterprise Server for SAP Applications 15
SUSE Linux Enterprise Workstation Extension 15
SUSE Linux Enterprise Micro
Slackware Linux
SUSE Package Hub 15
openSUSE Leap
Ubuntu
openEuler
Mozilla Thunderbird
mozilla-thunderbird
MozillaThunderbird-debuginfo
MozillaThunderbird
MozillaThunderbird-translations-common
MozillaThunderbird-translations-other
MozillaThunderbird-debugsource
thunderbird (Debian package)
mail-client/thunderbird
mail-client/thunderbird-bin
thunderbird
thunderbird-debuginfo
thunderbird-debugsource
thunderbird-librnp-rnp
thunderbird-wayland
thunderbird (Ubuntu package)

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper input validation when handling MXC URIs. A malicious room member can trigger clients based on the matrix-js-sdk to issue arbitrary authenticated GET requests to the client's homeserver.

Install update from vendor's website.

• https://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-xvg8-m4x3-w6xr
• https://spec.matrix.org/v1.12/client-server-api/#security-considerations-5
• https://github.com/advisories/GHSA-xvg8-m4x3-w6xr
• https://github.com/matrix-org/matrix-js-sdk/releases/tag/v34.11.1