Description
Oniguruma through 6.9.3, as used in PHP 7.3.x and other products, has a heap-based buffer over-read in str_lower_case_match in regexec.c.
References (5)
Core 5
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/kkos/oniguruma/commit/d3e402928b6eb3327f8f7d59a9edfa622fec557b
Third Party Advisory x_refsource_misc
https://bugs.php.net/bug.php?id=78559
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/
Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2019/12/msg00002.html
Third Party Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4460-1/
Scores
CVSS v3
7.5
EPSS
0.0032
EPSS Percentile
55.0%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-125
Status
published
Products (5)
canonical/ubuntu_linux
14.04
debian/debian_linux
8.0
fedoraproject/fedora
31
oniguruma_project/oniguruma
< 6.9.3
php/php
7.3.0 - 7.3.10
Published
Nov 25, 2019
Tracked Since
Feb 18, 2026