Kirby up to 3.9.5 session expiration

Summaryinfo

A vulnerability labeled as problematic has been found in Kirby up to 3.5.8.2/3.6.6.2/3.7.5.1/3.8.4.0/3.9.5. This impacts an unknown function. Such manipulation leads to session expiration. This vulnerability is traded as CVE-2023-38489. The attack may be launched remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Kirby up to 3.5.8.2/3.6.6.2/3.7.5.1/3.8.4.0/3.9.5. It has been rated as problematic. Affected by this issue is an unknown part. The manipulation with an unknown input leads to a session expiration vulnerability. Using CWE to declare the problem leads to CWE-613. According to WASC, "Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization." Impacted is confidentiality, integrity, and availability. CVE summarizes:

Kirby is a content management system. A vulnerability in versions prior to 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and 3.9.6 affects all Kirby sites with user accounts (unless Kirby's API and Panel are disabled in the config). It can only be abused if a Kirby user is logged in on a device or browser that is shared with potentially untrusted users or if an attacker already maliciously used a previous password to log in to a Kirby site as the affected user. Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization. In the variation described in this advisory, it allows attackers to stay logged in to a Kirby site on another device even if the logged in user has since changed their password. Kirby did not invalidate user sessions that were created with a password that was since changed by the user or by a site admin. If a user changed their password to lock out an attacker who was already in possession of the previous password or of a login session on another device or browser, the attacker would not be reliably prevented from accessing the Kirby site as the affected user. The problem has been patched in Kirby 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1, and Kirby 3.9.6. In all of the mentioned releases, the maintainers have updated the authentication implementation to keep track of the hashed password in each active session. If the password changed since the login, the session is invalidated. To enforce this fix even if the vulnerability was previously abused, all users are logged out from the Kirby site after updating to one of the patched releases.

The weakness was shared 07/27/2023 as GHSA-5mvj-rvp8-rf45. The advisory is available at github.com. This vulnerability is handled as CVE-2023-38489 since 07/18/2023. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available.

Upgrading to version 3.5.8.3, 3.6.6.3, 3.7.5.2, 3.8.4.1 or 3.9.6 eliminates this vulnerability. Applying the patch 7a0a2014c69fdb925ea02f30e7793bb50115e931 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Name

• Kirby

Version

• 3.5.8.0
• 3.5.8.1
• 3.5.8.2
• 3.6.6.0
• 3.6.6.1
• 3.6.6.2
• 3.7.5.0
• 3.7.5.1
• 3.8.0
• 3.8.1
• 3.8.2
• 3.8.3
• 3.8.4.0
• 3.9.0
• 3.9.1
• 3.9.2
• 3.9.3
• 3.9.4
• 3.9.5

License

• open-source

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CPE 2.2info

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