8.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
9.1%
The password reset mechanism of the Directus backend is implemented in a way where combined with (specific, need to double check if i can work around) configuration in MySQL or MariaDB. As such, it allows attackers to receive a password reset email of a victim user, specifically having it arrive at a similar email address as the victim with a one or more characters changed to use accents.
This is due to the fact that by default MySQL/MariaDB are configured for accent-insenstive and case-insensitve comparisons.
MySQL weak comparison:
select 1 from directus_users where '[email protected]' = 'julian@cรผre53.de';
This is exploitable due to an error in the API using the supplied email address for sending the reset password mail instead of using the email from the database.
[email protected]
. (possibly just the domain could be enough for an educated guess)cรผre53.de
can be registered to be able to receive emails.julian@cรผre53.de
.POST /auth/password/request HTTP/1.1
Host: example.com
[...]
{"email":"julian@cรผre53.de"}
[email protected]
and will continue to email the password reset link to the provided email address instead of the saved email address.Should be possible with collations but havenโt been able to confirm this.
dev.mysql.com/doc/refman/8.0/en/charset-unicode-sets.html
github.com/advisories/GHSA-qw9g-7549-7wg5
github.com/directus/directus/commit/a8ef790ea2d28b1727f9027d99bd360920d57919
github.com/directus/directus/security/advisories/GHSA-qw9g-7549-7wg5
nvd.nist.gov/vuln/detail/CVE-2024-27295
www.monolune.com/articles/what-is-the-utf8mb4_0900_ai_ci-collation
8.2 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
7 High
AI Score
Confidence
Low
0.0004 Low
EPSS
Percentile
9.1%