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CVE-2022-24838

Command Injection in Appointment Emails for Nextcloud Calendar

Published: Apr 11, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-74
5.3MEDIUM
NVD MITRE
EPSS Score
32.3%
Top 1.8%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:LI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-74

Affected Products

nextcloud
oss-project·DEaka nextcloud server
calendarSaaSWeb App
Cloud & SaaS / saas-application
security-advisoriesSaaSSaaS Service
Cloud & SaaS / saas-application
ООО «Ред Софт»
commercial·RUaka red soft
РЕД ОСOn-premOS
Operating Systems / linux-distro
Nextcloud GmbH
commercial·DEaka nextcloud server, nextcloud calendar, nextcloud enterprise server
Nextcloud CalendarSaaS
Cloud & SaaS / saas-application

Exploitability

Official Patch Available

Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/nextcloud/calendar/commit/7b70edfb8a0fcf0926f613ababcbd56c6ecd9f35
github.com
https://github.com/nextcloud/calendar/pull/4073
github.com
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-8xv5-4855-24qf
github.com
and 5 more references View all →

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