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CVE-2015-4050

Published: Jun 2, 2015Updated: May 6, 2026 Sources: CVE List NVD GHSACWE-284
NVD MITRE
4.3CVSSMEDIUM
EPSS Score
8.3%
Top 5.8%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
Patch Available
Am I actually vulnerable?1 Nuclei template available — see how to check your systems. How to verify

Description

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.

CVSS Vector Breakdown

AV:NAC:MAu:NC:NI:PA:N
Exploitability
AV:NAccess Vector
Network
AC:MAccess Complexity
Medium
Au:NAuthentication
None
Impact
C:NConfidentiality
None
I:PIntegrity
Partial
A:NAvailability
None
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Weaknesses

CWE-284

Affected Products

symfonysensiolabs
LibraryLibrary
OSS Libraries / generic-library
symfony/http-kernelPackagistOSS Libraries
symfony/symfonyPackagistOSS Libraries
n/an/a
sensiolabsoss-projectOSS Libraries
packagistpackage-ecosystemOSS Libraries

Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

References

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159513.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159603.html
lists.fedoraproject.org
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159610.html
lists.fedoraproject.org
and 8 more references View all →

Timeline

Published
Jun 2, 2015
Last Updated
May 6, 2026

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