Bug 1822707 (CVE-2020-5255) - CVE-2020-5255 php-symfony: Response without Content-Type header could result in cache poisoning
Summary: CVE-2020-5255 php-symfony: Response without Content-Type header could resul...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2020-5255
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1822708
Blocks:
TreeView+ depends on / blocked
 
Reported: 2020-04-09 16:36 UTC by Michael Kaplan
Modified: 2021-02-16 20:17 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2020-04-09 22:31:48 UTC
Embargoed:

Attachments (Terms of Use)

Description Michael Kaplan 2020-04-09 16:36:25 UTC 
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.
Comment 1 Michael Kaplan 2020-04-09 16:36:28 UTC 
External References:

https://github.com/symfony/symfony/security/advisories/GHSA-mcx4-f5f5-4859
Comment 2 Michael Kaplan 2020-04-09 16:36:46 UTC 
Created php-symfony4 tracking bugs for this issue:

Affects: fedora-all [bug 1822708]
Comment 3 Product Security DevOps Team 2020-04-09 22:31:48 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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