cvelist/2024/55xxx/CVE-2024-55603.json

{
    "data_version": "4.0",
    "data_type": "CVE",
    "data_format": "MITRE",
    "CVE_data_meta": {
        "ID": "CVE-2024-55603",
        "ASSIGNER": "security-advisories@github.com",
        "STATE": "PUBLIC"
    },
    "description": {
        "description_data": [
            {
                "lang": "eng",
                "value": "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`).\nThus, 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."
            }
        ]
    },
    "problemtype": {
        "problemtype_data": [
            {
                "description": [
                    {
                        "lang": "eng",
                        "value": "CWE-613: Insufficient Session Expiration",
                        "cweId": "CWE-613"
                    }
                ]
            }
        ]
    },
    "affects": {
        "vendor": {
            "vendor_data": [
                {
                    "vendor_name": "kanboard",
                    "product": {
                        "product_data": [
                            {
                                "product_name": "kanboard",
                                "version": {
                                    "version_data": [
                                        {
                                            "version_affected": "=",
                                            "version_value": "< 1.2.43"
                                        }
                                    ]
                                }
                            }
                        ]
                    }
                }
            ]
        }
    },
    "references": {
        "reference_data": [
            {
                "url": "https://github.com/kanboard/kanboard/security/advisories/GHSA-gv5c-8pxr-p484",
                "refsource": "MISC",
                "name": "https://github.com/kanboard/kanboard/security/advisories/GHSA-gv5c-8pxr-p484"
            },
            {
                "url": "https://github.com/kanboard/kanboard/commit/7ce61c34d962ca8b5dce776289ddf4b207be6e78",
                "refsource": "MISC",
                "name": "https://github.com/kanboard/kanboard/commit/7ce61c34d962ca8b5dce776289ddf4b207be6e78"
            },
            {
                "url": "https://github.com/kanboard/kanboard/blob/main/app/Core/Session/SessionHandler.php#L40",
                "refsource": "MISC",
                "name": "https://github.com/kanboard/kanboard/blob/main/app/Core/Session/SessionHandler.php#L40"
            },
            {
                "url": "https://www.php.net/manual/en/function.session-start.php",
                "refsource": "MISC",
                "name": "https://www.php.net/manual/en/function.session-start.php"
            },
            {
                "url": "https://www.php.net/manual/en/session.configuration.php#ini.session.gc-divisor",
                "refsource": "MISC",
                "name": "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-maxlifetime",
                "refsource": "MISC",
                "name": "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-probability",
                "refsource": "MISC",
                "name": "https://www.php.net/manual/en/session.configuration.php#ini.session.gc-probability"
            },
            {
                "url": "https://www.php.net/manual/en/sessionhandlerinterface.gc.php",
                "refsource": "MISC",
                "name": "https://www.php.net/manual/en/sessionhandlerinterface.gc.php"
            }
        ]
    },
    "source": {
        "advisory": "GHSA-gv5c-8pxr-p484",
        "discovery": "UNKNOWN"
    },
    "impact": {
        "cvss": [
            {
                "attackComplexity": "LOW",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 6.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N",
                "version": "3.1"
            }
        ]
    }
}