CVE-2020-5275
Published: 30 March 2020
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.
Priority
Status
| Package | Release | Status |
|---|---|---|
|
symfony Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(code not present)
|
| eoan |
Ignored
(end of life)
|
|
| focal |
Not vulnerable
(code not present)
|
|
| groovy |
Not vulnerable
(4.4.8-1)
|
|
| hirsute |
Not vulnerable
(4.4.8-1)
|
|
| impish |
Not vulnerable
(4.4.8-1)
|
|
| jammy |
Not vulnerable
(4.4.8-1)
|
|
| trusty |
Does not exist
|
|
| upstream |
Released
(4.4.7 and 5.0.7)
|
|
| xenial |
Not vulnerable
(code not present)
|
|
|
Patches: upstream: https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 8.1 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
References
- https://symfony.com/blog/cve-2020-5275-all-access-control-rules-are-required-when-a-firewall-uses-the-unanimous-strategy
- https://github.com/symfony/symfony/commit/c935e4a3fba6cc2ab463a6ca382858068d63cebf
- https://github.com/symfony/symfony/security/advisories/GHSA-g4m9-5hpf-hx72
- https://www.cve.org/CVERecord?id=CVE-2020-5275
- NVD
- Launchpad
- Debian