CVE-2021-4119
published 2021-12-15CVE-2021-4119: bookstack is vulnerable to Improper Access Control
PriorityP264critical9.8CVSS 3.1
AVNACLPRNUINSUCHIHAH
EPSS
26.89%
97.8th percentile
bookstack is vulnerable to Improper Access Control
Affected
3 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| bookstackapp | bookstack | <= 21.11.2 | — |
| bookstackapp | bookstackapp_bookstack | >= unspecified < 21.11.3 | 21.11.3 |
| ssddanbrown | bookstack | >= 0 < 21.11.3 | 21.11.3 |
CVSS provenance
nvdv3.19.8CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
nvdv3.05.3MEDIUMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P
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OSV
BookStack is vulnerable to Improper Access Control.
osv·2021-12-16
CVE-2021-4119 [MEDIUM] BookStack is vulnerable to Improper Access Control.
BookStack is vulnerable to Improper Access Control.
BookStack prior to version 21.11.3 is vulnerable to Improper Access Control. A logged-in user with no privileges OR guest user (if public access enabled) can access the /search/users/select AJAX endpoint meant for admins to manage audit logs, to dump all usernames existing in the Bookstack database. This can also be used to harvest email belonging to a user because BookStack also uses the code where(`email`, `like`, `%` . $search . `%`) to search for users based on email.
GHSA
BookStack is vulnerable to Improper Access Control.
ghsa·2021-12-16
CVE-2021-4119 [MEDIUM] CWE-284 BookStack is vulnerable to Improper Access Control.
BookStack is vulnerable to Improper Access Control.
BookStack prior to version 21.11.3 is vulnerable to Improper Access Control. A logged-in user with no privileges OR guest user (if public access enabled) can access the /search/users/select AJAX endpoint meant for admins to manage audit logs, to dump all usernames existing in the Bookstack database. This can also be used to harvest email belonging to a user because BookStack also uses the code where(`email`, `like`, `%` . $search . `%`) to search for users based on email.
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fcahttps://github.com/bookstackapp/bookstack/commit/e765e618547c92f4e0b46caca6fb91f0174efd99https://huntr.dev/bounties/135f2d7d-ab0b-4351-99b9-889efac46fca
2021-12-15
Published