Uncontrolled Recursion

2024-08-2111:49:52

Veracode Vulnerability Database

sca.analysiscenter.veracode.com

matrix-js-sdk

uncontrolled recursion

getroomupgradehistory

vulnerability

leaveroomchain

infinite recursion

malicious homeserver

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

AI Score

6.8

Confidence

High

JSON

matrix-js-sdk is vulnerable to Uncontrolled Recursion. The vulnerability is caused due to an infinite recursion in getRoomUpgradeHistory function causing the code to hang. A malicious homeserver can craft a room or room structure such that the predecessors form a cycle and also by calling leaveRoomChain() function.