CVE-2019-9025

Description

An issue was discovered in PHP 7.3.x before 7.3.1. An invalid multibyte string supplied as an argument to the mb_split() function in ext/mbstring/php_mbregex.c can cause PHP to execute memcpy() with a negative argument, which could read and write past buffers allocated for the data.

Weakness classification

• CWE-125: Out-of-bounds Read
• CWE-787: Out-of-bounds Write

Primary references

• cve@mitre.org — Exploit, Issue Tracking, Patch, Vendor Advisory
• cve@mitre.org — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory