Vulnerability Details : CVE-2019-9023

An issue was discovered in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1. A number of heap-based buffer over-read instances are present in mbstring regular expression functions when supplied with invalid multibyte data. These occur in ext/mbstring/oniguruma/regcomp.c, ext/mbstring/oniguruma/regexec.c, ext/mbstring/oniguruma/regparse.c, ext/mbstring/oniguruma/enc/unicode.c, and ext/mbstring/oniguruma/src/utf32_be.c when a multibyte regular expression pattern contains invalid multibyte sequences.
Publish Date : 2019-02-22 Last Update Date : 2019-06-18

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- CVSS Scores & Vulnerability Types

CVSS Score	7.5
Confidentiality Impact	Partial (There is considerable informational disclosure.)
Integrity Impact	Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
Availability Impact	Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity	Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication	Not required (Authentication is not required to exploit the vulnerability.)
Gained Access	None
Vulnerability Type(s)
CWE ID	125

- Related OVAL Definitions

Title	Definition Id	Class	Family
RHSA-2020:1624: php:7.2 security, bug fix, and enhancement update (Moderate)	oval:com.redhat.rhsa:def:20201624		unix

OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2019-9023

#	Product Type	Vendor	Product	Version	Update	Edition	Language
1	OS	Canonical	Ubuntu Linux	12.04	*	*	*	Version Details Vulnerabilities
2	OS	Canonical	Ubuntu Linux	14.04	*	*	*	Version Details Vulnerabilities
3	OS	Canonical	Ubuntu Linux	16.04	*	*	*	Version Details Vulnerabilities
4	OS	Debian	Debian Linux	9.0	*	*	*	Version Details Vulnerabilities
5	Application	Netapp	Storage Automation Store	-	*	*	*	Version Details Vulnerabilities
6	OS	Opensuse	Leap	42.3	*	*	*	Version Details Vulnerabilities
7	Application	PHP	PHP	*	*	*	*	Version Details Vulnerabilities