CVE-2019-9023
high-risk
Published 2019-02-22
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.
Do I need to act?
!
10.5% chance of exploitation in next 30 days
EPSS score — higher than 89% of all CVEs
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (7)
References (38)
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html
Third Party Advisory
http://www.securityfocus.com/bid/107156
Third Party Advisory
https://support.f5.com/csp/article/K06372014
Third Party Advisory
https://usn.ubuntu.com/3902-1/
Third Party Advisory
https://usn.ubuntu.com/3902-2/
Third Party Advisory
https://www.debian.org/security/2019/dsa-4398
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00083.html
and 18 more references
57
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
11/34 · Low
Exposure
14/34 · Moderate