Mattermost versions 9.5.x <= 9.5.3, 9.7.x <= 9.7.1 and 8.1.x <= 8.1.12 fail to perform a proper authorization check in the /api/v4/groups/<group-id>/channels/<channel-id>/link endpoint which allows a user to learn the members of an AD/LDAP group that is linked to a team by adding the group to a channel, even if the user has no access to the team.
{
"unresolved_ranges": [
{
"source": "AFFECTED_FIELD",
"extracted_events": [
{
"introduced": "9.5.0"
},
{
"last_affected": "9.5.3"
},
{
"introduced": "9.7.0"
},
{
"last_affected": "9.7.1"
},
{
"introduced": "8.1.0"
},
{
"last_affected": "8.1.12"
}
]
}
],
"cwe_ids": [
"CWE-200"
],
"cna_assigner": "Mattermost",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/34xxx/CVE-2024-34029.json"
}{
"source": "CPE_RANGE",
"cpe": "cpe:2.3:a:mattermost:mattermost_server:*:*:*:*:*:*:*:*",
"extracted_events": [
{
"introduced": "8.1.0"
},
{
"fixed": "8.1.13"
},
{
"introduced": "9.5.0"
},
{
"fixed": "9.5.4"
},
{
"introduced": "9.7.0"
},
{
"fixed": "9.7.2"
}
]
}