GitHub Advisory DatabaseGHSA-RFCF-M67M-JCRQAuthentication granted to all firewalls instead of just one
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
56.9%
Description
When an application defines multiple firewalls, the authenticated token delivered by one of the firewalls is available to all other firewalls. This can be abused when the application defines different providers for different parts of an application. In such a situation, a user authenticated on one part of the application is considered authenticated on the whole application.
Resolution
We now ensure that the authenticated token is only available for the firewall that generates it.
The patch for this issue is available here for branch 5.3.
Credits
I would like to thank Bogdan, gndk, PaweΕ WarchoΕ, Warxcell, and Adrien Lamotte for reporting the issue and Wouter J for fixing the issue.
Affected configurations
| CPE | Name | Operator | Version |
|---|---|---|---|
| symfony/symfony | lt | 5.3.2 | |
| symfony/security-http | lt | 5.3.2 |
References
github.com/advisories/GHSA-rfcf-m67m-jcrq
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/security-http/CVE-2021-32693.yaml
github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2021-32693.yaml
github.com/symfony/security-http/commit/6bf4c31219773a558b019ee12e54572174ff8129
github.com/symfony/symfony/commit/3084764ad82f29dbb025df19978b9cbc3ab34728
github.com/symfony/symfony/security/advisories/GHSA-rfcf-m67m-jcrq
nvd.nist.gov/vuln/detail/CVE-2021-32693
symfony.com/blog/cve-2021-32693-authentication-granted-to-all-firewalls-instead-of-just-one
symfony.com/cve-2021-32693
Related
6.5 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:P/I:P/A:P
8.8 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
0.002 Low
EPSS
Percentile
56.9%