CVE-2023-45150
Due to missing precondition checks the server was trying to validate strings of any length as email addresses even when megabytes of data were provided, eventually making the server busy and unresponsive.
Does this matter?
Lower severity and a low EPSS score (0.39%). Track it; it rarely justifies an emergency change on its own.
Description
Nextcloud calendar is a calendar app for the Nextcloud server platform. Due to missing precondition checks the server was trying to validate strings of any length as email addresses even when megabytes of data were provided, eventually making the server busy and unresponsive. It is recommended that the Nextcloud Calendar app is upgraded to 4.4.4. The only workaround for users unable to upgrade is to disable the calendar app.
- CVSS 3.1
- 4.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
- EPSS
- 0.39% probability · 32th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-400, CWE-354
- Affected
- nextcloud/calendar
- Source
- security-advisories@github.com
References
- https://github.com/nextcloud/calendar/pull/5358Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r936-8gwm-w452Vendor Advisory
- https://hackerone.com/reports/2058337Exploit, Issue Tracking
- https://github.com/nextcloud/calendar/pull/5358Patch
- https://github.com/nextcloud/security-advisories/security/advisories/GHSA-r936-8gwm-w452Vendor Advisory
- https://hackerone.com/reports/2058337Exploit, Issue Tracking
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.