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.
{
"cna_assigner": "hackerone",
"unresolved_ranges": [
{
"extracted_events": [
{
"introduced": "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"
},
{
"last_affected": "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"
}
],
"source": "AFFECTED_FIELD"
}
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/28xxx/CVE-2023-28357.json",
"cwe_ids": [
"CWE-200"
]
}{
"cpe": "cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "0"
},
{
"fixed": "6.0.0"
}
],
"source": "CPE_RANGE"
}