CVE-2022-24838
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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 33.0%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
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 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 33.02% probability · 98th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-74
- Affected
- nextcloud/calendar
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecd9f35Patch, Third Party Advisory
- https://github.com/nextcloud/calendar/pull/4073Patch, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4855-24qfThird Party Advisory
- https://github.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecd9f35Patch, Third Party Advisory
- https://github.com/nextcloud/calendar/pull/4073Patch, Third Party Advisory
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4855-24qfThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.