CVE-2019-11935 Information

Description

Insufficient boundary checks when processing a string in mb_ereg_replace allows access to out-of-bounds memory. 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/1c518555dba6ceb45d5ba61845b96e261219c3b7 https://hhvm.com/blog/2019/10/28/security-update.html https://www.facebook.com/security/advisories/cve-2019-11935

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