CVE-2023-28357

2023-05-1122:15:09

CWE-200

[email protected]

web.nvd.nist.gov

cve-2023-28357

rocket.chat

slash command

/mute

acl checks

private channel

authenticated users

unauthorized users

4.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

4.5 Medium

AI Score

Confidence

High

0.0005 Low

EPSS

Percentile

17.7%

JSON

A vulnerability has been identified in Rocket.Chat, where the ACL checks in the Slash Command /mute occur after checking whether a user is a member of a given channel, leaking private channel members to unauthorized users. This allows authenticated users to enumerate whether a username is a member of a channel that they do not have access to.