by Kastro
Paper/Archive/CVE-2022-24838

CVE-2022-24838

nextcloud security-advisories — Command Injection in Appointment Emails for Nextcloud Calendar

EPSS 33%CVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 98.4.984 × 2019.7No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
security-advisories< 3.2.2–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)5.3CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refgithub.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4855-24qfrefgithub.com/nextcloud/calendar/pull/4073refgithub.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecd9f35