CVE-2020-5275 Information

Description

In symfony/security-http before versions 4.4.7 and 5.0.7 when a Firewall checks access control rule it iterate overs each rule’s attributes and stops as soon as the accessDecisionManager decides to grant access on the attribute preventing the check of next attributes that should have been take into account in an unanimous strategy. The accessDecisionManager is now called with all attributes at once allowing the unanimous strategy being applied on each attribute. This issue is patched in versions 4.4.7 and 5.0.7.

CVSS Vector

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

Reference

https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

NONE

Base Severity

8.1