CVE-2024-39777: Github.com/mattermost/mattermost/server/v8 Mattermost Allows Unsolicited Invites To Vulnerability
CRITICALCVE-2024-39777 is a CRITICAL (CVSS 8.7) mattermost allows unsolicited invites to vulnerability (CWE-284: Improper Access Control) affecting Github.com/mattermost/mattermost/server/v8 libraries in the Go ecosystem. The issue involves mattermost allows unsolicited invites to expose access to local channels. Remediation is available by upgrading affected packages to version 9.9.1, 9.5.7, 9.7.6, 9.8.1.
CVE-2024-39777 at a Glance
Security Impact
CVSS: 8.7
The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N).
How to Fix CVE-2024-39777
To remediate this vulnerability, upgrade all affected Github.com/mattermost/mattermost/server/v8 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.
Upgrade github.com/mattermost/mattermost/server/v8 to 9.9.1Upgrade github.com/mattermost/mattermost/server/v8 to 9.5.7Upgrade github.com/mattermost/mattermost/server/v8 to 9.7.6Upgrade github.com/mattermost/mattermost/server/v8 to 9.8.1Run the following command in your project directory to verify that all resolved dependencies use the patched release:
inspect dependencies for github.com/mattermost/mattermost/server/v8How to Check if You Are Affected
To determine whether your application is affected by CVE-2024-39777, inspect your project dependencies for Github.com/mattermost/mattermost/server/v8:
inspect dependencies for github.com/mattermost/mattermost/server/v8Analyze the terminal output to locate any version of Github.com/mattermost/mattermost/server/v8 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 9.9.1), your application is affected.
Note: Verify declared build manifests and deployed runtime container environments.
Technical Details
Vulnerability Mechanism & Technical Analysis
This vulnerability is classified under CWE-284: Improper Access Control, where the product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. In Github.com/mattermost/mattermost/server/v8, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.
Source Advisory Statement
CVE-2024-39777 Affected Github.com/mattermost/mattermost/server/v8 Versions
4 component(s)| Product / Package | Ecosystem | Affected Versions | Fixed Version |
|---|---|---|---|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.9.0
< 9.9.1
|
9.9.1
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.5.0
< 9.5.7
|
9.5.7
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.7.0
< 9.7.6
|
9.7.6
|
|
github.com/mattermost/mattermost/server/v8
|
Go |
≥ 9.8.0
< 9.8.1
|
9.8.1
|
References
Frequently Asked Questions
What is CVE-2024-39777?
Which Github.com/mattermost/mattermost/server/v8 versions are affected?
What version fixes CVE-2024-39777?
Is github.com/mattermost/mattermost/server/v8 affected?
What is the CVSS score of CVE-2024-39777?
What CWE is associated with CVE-2024-39777?
How can I check Go dependencies for CVE-2024-39777?
Machine-readable OSV JSON
OSV v1.5 Schema
{
"schema_version" : "1.4.0",
"id" : "GHSA-q22q-2rrf-m27p",
"modified" : "2024-11-18T16:26:58Z",
"published" : "2024-08-01T15:32:23Z",
"aliases" : [ "CVE-2024-39777" ],
"summary" : "Mattermost allows unsolicited invites to expose access to local channels",
"details" : "Mattermost versions 9.9.x <= 9.9.0, 9.5.x <= 9.5.6, 9.7.x <= 9.7.5 and 9.8.x <= 9.8.1 fail to disallow unsolicited invites to expose access to local channels, when shared channels are enabled, which allows a malicious remote to send an invite with the ID of an existing local channel, and that local channel will then become shared without the consent of the local admin.",
"severity" : [ {
"type" : "CVSS_V3",
"score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:N"
}, {
"type" : "CVSS_V4",
"score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N"
} ],
"affected" : [ {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.9.0"
}, {
"fixed" : "9.9.1"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.5.0"
}, {
"fixed" : "9.5.7"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.7.0"
}, {
"fixed" : "9.7.6"
} ]
} ]
}, {
"package" : {
"ecosystem" : "Go",
"name" : "github.com/mattermost/mattermost/server/v8"
},
"ranges" : [ {
"type" : "ECOSYSTEM",
"events" : [ {
"introduced" : "9.8.0"
}, {
"fixed" : "9.8.1"
} ]
} ]
} ],
"references" : [ {
"type" : "ADVISORY",
"url" : "https://nvd.nist.gov/vuln/detail/CVE-2024-39777"
}, {
"type" : "PACKAGE",
"url" : "https://github.com/mattermost/mattermost"
}, {
"type" : "WEB",
"url" : "https://mattermost.com/security-updates"
} ],
"database_specific" : {
"cwe_ids" : [ "CWE-284" ],
"severity" : "CRITICAL",
"github_reviewed" : true,
"github_reviewed_at" : "2024-08-23T18:51:05Z",
"nvd_published_at" : "2024-08-01T15:15:12Z"
}
}