Vulnerability Description
Nextcloud Calendar is a calendar application for the nextcloud framework. SMTP Command Injection in Appointment Emails via Newlines: as newlines and special characters are not sanitized in the email value in the JSON request, a malicious attacker can inject newlines to break out of the `RCPT TO:<BOOKING USER'S EMAIL> ` SMTP command and begin injecting arbitrary SMTP commands. It is recommended that Calendar is upgraded to 3.2.2. There are no workaround available.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nextcloud | Calendar | < 3.2.2 |
Related Weaknesses (CWE)
References
- https://github.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecPatchThird Party Advisory
- https://github.com/nextcloud/calendar/pull/4073PatchThird Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4Third Party Advisory
- https://github.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecPatchThird Party Advisory
- https://github.com/nextcloud/calendar/pull/4073PatchThird Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4Third Party Advisory
FAQ
What is CVE-2022-24838?
CVE-2022-24838 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Nextcloud Calendar is a calendar application for the nextcloud framework. SMTP Command Injection in Appointment Emails via Newlines: as newlines and special characters are not sanitized in the email v...
How severe is CVE-2022-24838?
CVE-2022-24838 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2022-24838?
Check the references section above for vendor advisories and patch information. Affected products include: Nextcloud Calendar.