CVE-2021-21324
In GLPI before version 9.5.4 there is an Insecure Direct Object Reference (IDOR) on "Solutions".
Does this matter?
Lower severity and a low EPSS score (1.42%). Track it; it rarely justifies an emergency change on its own.
Description
GLPI is an open-source asset and IT management software package that provides ITIL Service Desk features, licenses tracking and software auditing. In GLPI before version 9.5.4 there is an Insecure Direct Object Reference (IDOR) on "Solutions". This vulnerability gives an unauthorized user the ability to enumerate GLPI items names (including users logins) using the knowbase search form (requires authentication). To Reproduce: Perform a valid authentication at your GLPI instance, Browse the ticket list and select any open ticket, click on Solution form, then Search a solution form that will redirect you to the endpoint /"glpi/front/knowbaseitem.php?item_itemtype=Ticket&item_items_id=18&forcetab=Knowbase$1", and the item_itemtype=Ticket parameter present in the previous URL will point to the PHP alias of glpi_tickets table, so just replace it with "Users" to point to glpi_users table instead; in the same way, item_items_id=18 will point to the related column id, so changing it too you should be able to enumerate all the content which has an alias. Since such id(s) are obviously incremental, a malicious party could exploit the vulnerability simply by guessing-based attempts.
- CVSS 3.1
- 6.5 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 1.42% probability · 71th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-639
- Affected
- glpi-project/glpi
- Source
- security-advisories@github.com
References
- https://github.com/glpi-project/glpi/commit/aade65b7f67d46f23d276a8acb0df70651c3b1dcPatch, Third Party Advisory
- https://github.com/glpi-project/glpi/releases/tag/9.5.4Release Notes, Third Party Advisory
- https://github.com/glpi-project/glpi/security/advisories/GHSA-jvwm-gq36-3v7vExploit, Third Party Advisory
- https://github.com/glpi-project/glpi/commit/aade65b7f67d46f23d276a8acb0df70651c3b1dcPatch, Third Party Advisory
- https://github.com/glpi-project/glpi/releases/tag/9.5.4Release Notes, Third Party Advisory
- https://github.com/glpi-project/glpi/security/advisories/GHSA-jvwm-gq36-3v7vExploit, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.