CVE-2019-9023

Public Exploit

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 contains invalid multibyte sequences.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 12.99% Top 10%
Vendor Advisory ubuntu.com Vendor Advisory debian.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://usn.ubuntu.com/3902-2/ third party advisory vendor advisory
https://bugs.php.net/bug.php?id=77382 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=77418 issue tracking patch vendor advisory exploit
https://www.debian.org/security/2019/dsa-4398 third party advisory vendor advisory
https://bugs.php.net/bug.php?id=77371 issue tracking patch vendor advisory exploit
https://usn.ubuntu.com/3902-1/ third party advisory vendor advisory
http://www.securityfocus.com/bid/107156 vdb entry third party advisory
https://bugs.php.net/bug.php?id=77370 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=77385 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=77394 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=77381 issue tracking patch vendor advisory exploit
https://security.netapp.com/advisory/ntap-20190321-0001/ third party advisory patch
https://support.f5.com/csp/article/K06372014 third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00104.html mailing list third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00041.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00044.html vendor advisory
https://access.redhat.com/errata/RHSA-2019:2519 vendor advisory
https://access.redhat.com/errata/RHSA-2019:3299 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2019-9023?
CVE-2019-9023 has been scored as a critical severity vulnerability.
How to fix CVE-2019-9023?
To fix CVE-2019-9023, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-9023 being actively exploited in the wild?
It is possible that CVE-2019-9023 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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