CVE-2020-5255
Published: 30 March 2020
In Symfony before versions 4.4.7 and 5.0.7, when a `Response` does not contain a `Content-Type` header, affected versions of Symfony can fallback to the format defined in the `Accept` header of the request, leading to a possible mismatch between the response's content and `Content-Type` header. When the response is cached, this can prevent the use of the website by other users. This has been 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/dca343442e6a954f96a2609e7b4e9c21ed6d74e6 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
References
- https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header
- https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6
- https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859
- https://www.cve.org/CVERecord?id=CVE-2020-5255
- NVD
- Launchpad
- Debian