Vulnerability Monitor

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CVE-2020-5255

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.

Published

2020-03-30T20:15:19.570

Last Modified

2024-11-21T05:33:46.550

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 2.6 (LOW)

CVSSv2 Vector

AV:N/AC:L/Au:S/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: SINGLE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

8.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-435
Type: Primary
CWE-20

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	sensiolabs	symfony	< 4.4.7	Yes
Application	sensiolabs	symfony	< 5.0.7	Yes

References

https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6 Patch, Third Party Advisory ([email protected])
https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859 Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/ ([email protected])
https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header Third Party Advisory ([email protected])
https://github.com/symfony/symfony/commit/dca343442e6a954f96a2609e7b4e9c21ed6d74e6 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/C36JLPHUPKDFAX6D5WYFC4ALO2K7RDUQ/ (af854a3a-2127-422b-91ae-364da2661108)
https://symfony.com/blog/cve-2020-5255-prevent-cache-poisoning-via-a-response-content-type-header Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)