CVE-2019-11936

Description

Various APC functions accept keys containing null bytes as input, leading to premature truncation of input. This issue affects HHVM versions prior to 3.30.12, all versions between 4.0.0 and 4.8.5, all versions between 4.9.0 and 4.23.1, as well as 4.24.0, 4.25.0, 4.26.0, 4.27.0, 4.28.0, and 4.28.1.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.62%
Vendor Advisory hhvm.com Vendor Advisory facebook.com
Affected: Facebook HHVM
Published at:
Updated at:

References

Link Tags
https://hhvm.com/blog/2019/10/28/security-update.html vendor advisory
https://github.com/facebook/hhvm/commit/f57df6d8cf33cb14c40f52287da29360e7003373 third party advisory patch
https://www.facebook.com/security/advisories/cve-2019-11936 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-11936?
CVE-2019-11936 has been scored as a critical severity vulnerability.
How to fix CVE-2019-11936?
To fix CVE-2019-11936, 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-2019-11936 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2019-11936 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-2019-11936?
CVE-2019-11936 affects Facebook HHVM.
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