CVE-2022-24838 Command Injection in Appointment Emails for Nextcloud Calendar

2022-04-1120:25:13

CWE-74

GitHub_M

www.cve.org

cve-2022-24838

command injection

nextcloud calendar

smtp injection

upgrade advisory

no workaround

CVSS3

5.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

Confidence

High

EPSS

0.002

Percentile

52.4%

JSON

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.

CNA Affected

[
  {
    "product": "security-advisories",
    "vendor": "nextcloud",
    "versions": [
      {
        "status": "affected",
        "version": "< 3.2.2"
      }
    ]
  }
]