CVE-2019-11930

EPSS 3.2%CWE-763

An invalid free in mb_detect_order can cause the application to crash or potentially result in remote code execution. 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.

Affected products

Facebook · HHVM

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References

https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36 https://hhvm.com/blog/2019/10/28/security-update.html https://www.facebook.com/security/advisories/cve-2019-11930