Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-qmqw-mpqp-mr54
Advisory ID github_osv/GHSA-qmqw-mpqp-mr54
Aliases CVE-2015-4050
Summary Symfony Incorrect Access Control FragmentListener in the HttpKernel component in Symfony 2.3.19 through 2.3.28, 2.4.9 through 2.4.10, 2.5.4 through 2.5.11, and 2.6.0 through 2.6.7, when ESI or SSI support enabled, does not check if the `_controller` attribute is set, which allows remote attackers to bypass URL signing and security rules by including (1) no hash or (2) an invalid hash in a request to `/_fragment`. This issue has been fixed in Symfony 2.3.29, 2.5.12, and 2.6.8. Note that no fixes are provided for Symfony 2.4 as it's not maintained anymore.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (1)
CWE-284 Improper Access Control
System Score Found at
generic_textual MODERATE
Reference id Reference type URL
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159513.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159603.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159610.html
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/http-kernel/CVE-2015-4050.yaml
https://github.com/FriendsOfPHP/security-advisories/blob/master/symfony/symfony/CVE-2015-4050.yaml
https://web.archive.org/web/20200228090443/http://www.securityfocus.com/bid/74928
http://symfony.com/blog/cve-2015-4050-esi-unauthorized-access
http://www.debian.org/security/2015/dsa-3276
CVE-2015-4050 https://nvd.nist.gov/vuln/detail/CVE-2015-4050
CVE-2015-4050 https://symfony.com/cve-2015-4050
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
There are no known vectors.

There are no SSVC decisions available.