CVE-2024-23649
7.5 · HIGHOverview
CVE-2024-23649 is a high-severity vulnerability affecting join-lemmy lemmy. It was published on January 24, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical Description
Lemmy is a link aggregator and forum for the fediverse. Starting in version 0.17.0 and prior to version 0.19.1, users can report private messages, even when they're neither sender nor recipient of the message. The API response to creating a private message report contains the private message itself, which means any user can just iterate over message ids to (loudly) obtain all private messages of an instance. A user with instance admin privileges can also abuse this if the private message is removed from the response, as they're able to see the resulting reports.
Creating a private message report by POSTing to `/api/v3/private_message/report` does not validate whether the reporter is the recipient of the message. lemmy-ui does not allow the sender to report the message; the API method should likely be restricted to accessible to recipients only. The API response when creating a report contains the `private_message_report_view` with all the details of the report, including the private m
Remediation
Check the references section for vendor advisories and patches from join-lemmy. Update lemmy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| join-lemmy | lemmy | >= 0.17.0, < 0.19.1 | Affected |
References
Frequently Asked Questions
What is CVE-2024-23649?
CVE-2024-23649 is a high-severity vulnerability affecting join-lemmy lemmy. It was published on January 24, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2024-23649?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2024-23649?
Check the references section for vendor advisories and patches from join-lemmy. Update lemmy to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2024-23649?
CyberStrike's AI-powered security agents can automatically detect CVE-2024-23649 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
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