Denial of service in Matrix Javascript SDK

1) Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

EUVDB-ID: #VU74153

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-28427

CWE-ID: CWE-1321 - Improperly Controlled Modification of Object Prototype Attributes (\'Prototype Pollution\')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a prototype pollution issue in Matrix SDK. A remote attacker can pass specially crafted input with events containing special strings in key locations and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Matrix Javascript SDK: 0.1.0 - 23.5.0

CPE2.3

• cpe:2.3:a:matrix_org:matrix-js-sdk:0.1.0:*:*:*:*:*:*:
• cpe:2.3:a:matrix_org:matrix-js-sdk:0.1.1:*:*:*:*:*:*:
• cpe:2.3:a:matrix_org:matrix-js-sdk:0.2.0:*:*:*:*:*:*:

External links

http://matrix.org/blog/2023/03/28/security-releases-matrix-js-sdk-24-0-0-and-matrix-react-sdk-3-69-0
http://github.com/matrix-org/matrix-js-sdk/security/advisories/GHSA-mwq8-fjpf-c2gr

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.