Description

Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue listening to streaming after the application had been destroyed. Essentially this comes down to the fact that when Doorkeeper sets up the relationship between Applications and Access Tokens, it uses a `dependent: delete_all` configuration, which means the `after_commit` callback setup on `AccessTokenExtension` didn't actually fire, since `delete_all` doesn't trigger ActiveRecord callbacks. To mitigate, we need to add a `before_destroy` callback to `ApplicationExtension` which announces to streaming that all the Application's Access Tokens are being "killed". Impact should be negligible given the affected application had to be owned by the user. None the less this issue has been addressed in versions 4.2.6, 4.1.14, 4.0.14, and 3.5.18. Users are advised to upgrade. There are no known workaround for this vulnerability.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  N/A

NVD assessment not yet provided.

CNA:  GitHub, Inc.

Base Score:  3.1 LOW

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

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings. A CNA provided score within the CVE List has been displayed.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score: N/A

NVD assessment not yet provided.

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have not published a CVSS score for this CVE at this time. NVD Analysts use publicly available information at the time of analysis to associate CVSS vector strings.

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
https://github.com/mastodon/mastodon/commit/68eaa804c9bafdc5f798e114e9ba00161425dd71
https://github.com/mastodon/mastodon/security/advisories/GHSA-7w3c-p9j8-mq3x

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-672	Operation on a Resource after Expiration or Release	GitHub, Inc.
CWE-613	Insufficient Session Expiration	GitHub, Inc.

Change History

1 change records found show changes

New CVE Received by NIST 2/14/2024 4:15:08 PM

Action	Type	Old Value	New Value
Added	CVSS V3.1		GitHub, Inc. AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Added	CWE		GitHub, Inc. CWE-613
Added	CWE		GitHub, Inc. CWE-672
Added	Description		Record truncated, showing 500 of 1119 characters. View Entire Change Record Mastodon is a free, open-source social network server based on ActivityPub. When an OAuth Application is destroyed, the streaming server wasn't being informed that the Access Tokens had also been destroyed, this could have posed security risks to users by allowing an application to continue listening to streaming after the application had been destroyed. Essentially this comes down to the fact that when Doorkeeper sets up the relationship between Applications and Access Tokens, it uses a `depend
Added	Reference		GitHub, Inc. https://github.com/mastodon/mastodon/commit/68eaa804c9bafdc5f798e114e9ba00161425dd71 [No types assigned]
Added	Reference		GitHub, Inc. https://github.com/mastodon/mastodon/security/advisories/GHSA-7w3c-p9j8-mq3x [No types assigned]