CVE-2019-11930 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

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

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8