Vulnerability · Published May 11, 2023 · Assigned by hackerone
CVE-2023-28357
Medium 4.3
In plain English
A medium-severity information exposure in Rocket.Chat. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)4.3Medium
Exploit odds (30 days)0.4%top 64.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| n/a | Rocket.Chat | This issue has been fixed in version 6.0> and is backported for the supported versions. Check this document for more info: https://docs.rocket.chat/resources/get-support/enterprise-support#rocket.chat-versions |
Weakness: CWE-200, CWE-863 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N