CVE-2018-6334

Description

Multipart-file uploads call variables to be improperly registered in the global scope. In cases where variables are not declared explicitly before being used this can lead to unexpected behavior. This affects all supported versions of HHVM prior to the patch (3.25.1, 3.24.5, and 3.21.9 and below).

Categories

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 0.51%
Third-Party Advisory github.com Third-Party Advisory hhvm.com
Affected: Facebook HHVM
Published at:
Updated at:

References

Link Tags
https://github.com/facebook/hhvm/commit/6937de5544c3eead3466b75020d8382080ed0cff third party advisory patch
https://hhvm.com/blog/2018/03/30/hhvm-3.25.2.html third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2018-6334?
CVE-2018-6334 has been scored as a critical severity vulnerability.
How to fix CVE-2018-6334?
To fix CVE-2018-6334, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2018-6334 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2018-6334 is being actively exploited. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-6334?
CVE-2018-6334 affects Facebook HHVM.
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