CVE-2019-9023 — Out-of-bounds Read in PHP

CWE-125 — Out-of-bounds ReadCWE-122 — Heap-based Buffer Overflow9 documents7 sources
Severity
9.8CRITICALNVD
EPSS
10.5%
top 6.72%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
5
PHPPhp5Canonical Ubuntu Linux+2 more
Timeline
PublishedFeb 22
Latest updateJan 27

Description

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 co…

CVSS vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:HExploitability: 3.9 | Impact: 5.9

Affected Packages3 packages

▶NVDphp/php7.0.0 — 7.1.26+3
▶Ubuntuphp5/php5< 5.5.9+dfsg-1ubuntu4.27
▶NVDopensuse/leap42.3

Also affects: Debian Linux 9.0, Ubuntu Linux 12.04, 14.04, 16.04

Patches

Patch: bugs.php.net ↗Patch: bugs.php.net ↗Patch: bugs.php.net ↗

🔴Vulnerability Details

3
GHSA
GHSA-f6fp-28gh-x93q: An issue was discovered in PHP before 5↗2022-05-14
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OSV
php5, php7.0 vulnerabilities↗2019-03-06
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OSV
CVE-2019-9023: An issue was discovered in PHP before 5↗2019-02-22
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📋Vendor Advisories

4
CISA ICS
Festo Didactic SE MES PC↗2026-01-27
▶
Ubuntu
PHP vulnerabilities↗2019-03-12
▶
Ubuntu
PHP vulnerabilities↗2019-03-06
▶
Red Hat
php: Heap-based buffer over-read in mbstring regular expression functions↗2018-12-29
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💬Community

1
Bugzilla
CVE-2019-9023 php: Heap-based buffer over-read in mbstring regular expression functions↗2019-03-05
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