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CVE-2015-4050

UnknownEPSS 8.27%

Last modified

CVE-2015-4050 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 8.27% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability
8.27%

94.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
SensiolabsSymfony2.3.19
SensiolabsSymfony2.3.20
SensiolabsSymfony2.3.21
SensiolabsSymfony2.3.22
SensiolabsSymfony2.3.23
SensiolabsSymfony2.3.24
SensiolabsSymfony2.3.25
SensiolabsSymfony2.3.26
SensiolabsSymfony2.3.27
SensiolabsSymfony2.3.28
SensiolabsSymfony2.4.9
SensiolabsSymfony2.4.10
SensiolabsSymfony2.5.4
SensiolabsSymfony2.5.5
SensiolabsSymfony2.5.6
SensiolabsSymfony2.5.7
SensiolabsSymfony2.5.8
SensiolabsSymfony2.5.9
SensiolabsSymfony2.5.10
SensiolabsSymfony2.5.11
SensiolabsSymfony2.6.0
SensiolabsSymfony2.6.1
SensiolabsSymfony2.6.3
SensiolabsSymfony2.6.4
SensiolabsSymfony2.6.5
SensiolabsSymfony2.6.6
SensiolabsSymfony2.6.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2015-4050?
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.
How severe is CVE-2015-4050?
Severity scoring for CVE-2015-4050 is pending analysis. The EPSS model estimates a 8.27% probability of exploitation in the next 30 days.
How do I fix CVE-2015-4050?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST