CVE - CVE-2024-55603

CVE-ID
CVE-2024-55603	Learn more at National Vulnerability Database (NVD) • CVSS Severity Rating • Fix Information • Vulnerable Software Versions • SCAP Mappings • CPE Information
Description
Kanboard is project management software that focuses on the Kanban methodology. In affected versions sessions are still usable even though their lifetime has exceeded. Kanboard implements a cutom session handler (`app/Core/Session/SessionHandler.php`), to store the session data in a database. Therefore, when a `session_id` is given, kanboard queries the data from the `sessions` sql table. At this point, it does not correctly verify, if a given `session_id` has already exceeded its lifetime (`expires_at`). Thus, a session which's lifetime is already `> time()`, is still queried from the database and hence a valid login. The implemented SessionHandlerInterface::gc function, that does remove invalid sessions, is called only with a certain probability (_Cleans up expired sessions. Called by `session_start()`, based on `session.gc_divisor`, `session.gc_probability` and `session.gc_maxlifetime` settings_) accordingly to the php documentation. In the official Kanboard docker image these values default to: session.gc_probability=1, session.gc_divisor=1000. Thus, an expired session is only terminated with probability 1/1000. This issue has been addressed in release 1.2.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
References
Note: References are provided for the convenience of the reader to help distinguish between vulnerabilities. The list is not intended to be complete.
MISC:https://github.com/kanboard/kanboard/blob/main/app/Core/Session/SessionHandler.php#L40 URL:https://github.com/kanboard/kanboard/blob/main/app/Core/Session/SessionHandler.php#L40 MISC:https://github.com/kanboard/kanboard/commit/7ce61c34d962ca8b5dce776289ddf4b207be6e78 URL:https://github.com/kanboard/kanboard/commit/7ce61c34d962ca8b5dce776289ddf4b207be6e78 MISC:https://github.com/kanboard/kanboard/security/advisories/GHSA-gv5c-8pxr-p484 URL:https://github.com/kanboard/kanboard/security/advisories/GHSA-gv5c-8pxr-p484 MISC:https://www.php.net/manual/en/function.session-start.php URL:https://www.php.net/manual/en/function.session-start.php MISC:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-divisor URL:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-divisor MISC:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-maxlifetime URL:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-maxlifetime MISC:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-probability URL:https://www.php.net/manual/en/session.configuration.php#ini.session.gc-probability MISC:https://www.php.net/manual/en/sessionhandlerinterface.gc.php URL:https://www.php.net/manual/en/sessionhandlerinterface.gc.php
Assigning CNA
GitHub (maintainer security advisories)
Date Record Created
20241209	Disclaimer: The record creation date may reflect when the CVE ID was allocated or reserved, and does not necessarily indicate when this vulnerability was discovered, shared with the affected vendor, publicly disclosed, or updated in CVE.
Phase (Legacy)
Assigned (20241209)
Votes (Legacy)

Comments (Legacy)

Proposed (Legacy)
N/A
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