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

CVE-2019-11930

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

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.

CRITICAL · CVSS 9.8 EPSS 0.02498
Schedule remediation
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-763Release of Invalid Pointer or Reference
CWE-763Release of Invalid Pointer or Reference
▤

Affected Products & Versions

4
facebook hhvm< 3.30.12
facebook hhvm>= 4.0.0 and <= 4.8.5
facebook hhvm>= 4.9.0 and <= 4.23.1
facebook hhvmall versions
▣

Scoring & Timeline

9.8
CRITICAL · CVSS v3.1 · cve-assign@fb.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD04 Dec 2019 · 05:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://github.com/facebook/hhvm/commit/524d2e60cfe910406ec6109e4286d7edd545ab36Patch
https://hhvm.com/blog/2019/10/28/security-update.htmlVendor Advisory
https://www.facebook.com/security/advisories/cve-2019-11930Vendor Advisory
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