feat: ical sync from external souces #21

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opened 2025-05-04 16:02:15 +00:00 by lima · 0 comments

lima commented

2025-05-04 16:02:15 +00:00

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Okay, here's a short list summarizing the key security implications for users self-hosting your application, especially regarding the external iCal sync feature:

Server-Side Request Forgery (SSRF): Malicious iCal URLs provided by a user could potentially allow the application (running on their server) to access sensitive resources on the host machine or within the user's private network.
Denial of Service (DoS): Bad iCal URLs (pointing to very large files or slow servers) could consume excessive CPU, memory, or network bandwidth on the user's own server, potentially making the application or even the host machine unresponsive.
Parsing Vulnerabilities: Flaws in the iCal parsing library used by the application could potentially be exploited by a malicious .ics file, potentially compromising the application container running on the user's server.
Sensitive Data Storage: The user's server will store potentially sensitive event data fetched from external calendars. The user is responsible for securing the server and storage volumes, while the application must ensure proper authorization if it supports multiple accounts on one instance.
Resource Exhaustion: Importing calendars with vast numbers of events could consume significant disk space and database resources on the user's server over time.

Okay, here's a short list summarizing the key security implications for users self-hosting your application, especially regarding the external iCal sync feature: * **Server-Side Request Forgery (SSRF):** Malicious iCal URLs provided by a user could potentially allow the application (running on their server) to access sensitive resources on the host machine or within the user's private network. * **Denial of Service (DoS):** Bad iCal URLs (pointing to very large files or slow servers) could consume excessive CPU, memory, or network bandwidth on the user's own server, potentially making the application or even the host machine unresponsive. * **Parsing Vulnerabilities:** Flaws in the iCal parsing library used by the application could potentially be exploited by a malicious `.ics` file, potentially compromising the application container running on the user's server. * **Sensitive Data Storage:** The user's server will store potentially sensitive event data fetched from external calendars. The user is responsible for securing the server and storage volumes, while the application must ensure proper authorization if it supports multiple accounts on one instance. * **Resource Exhaustion:** Importing calendars with vast numbers of events could consume significant disk space and database resources on the user's server over time.