Is CVE-2019-19203 in the CISA KEV catalog?

No. CVE-2019-19203 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-19203?

CVE-2019-19203 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2019-19203?

CVE-2019-19203 has an EPSS score of 4.05% (89th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-19203?

Upgrade libonig on debian 11 to 6.9.4-1 or later. Fixes are available for 12 affected products.

CVE & CISA-KEV Catalog

CVE-2019-19203

HIGHEPSS 89th pctl

7.5

CVSS v3

NVD

Description

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function gb18030_mbc_enc_len in file gb18030.c, a UChar pointer is dereferenced without checking if it passed the end of the matched string. This leads to a heap-based buffer over-read.

CWE-125Out-of-bounds Read

How to fix

Remediation Available

libonigDebian

Fixed in:6.9.4-1CVE-2019-19203

onigurumaRocky

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

onigurumaRed Hat / RHEL

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

oniguruma-debuginfoRocky

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

oniguruma-debuginfoRed Hat / RHEL

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

oniguruma-debugsourceRed Hat / RHEL

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

oniguruma-debugsourceRocky

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

oniguruma-develRed Hat / RHEL

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

oniguruma-develRocky

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

Fixed in:0:6.8.2-2.1.el8_6RHSA-2024:0409

Fixed in:0:6.8.2-2.1.el8_9RHSA-2024:0889

Fixed in:0:6.8.2-2.1.el8_8RHSA-2024:0572

libonigUbuntu

Fixed in:5.9.1-1ubuntu1.1+esm3USN-5662-1

Fixed in:5.9.6-1ubuntu0.1+esm3USN-5662-1

Fixed in:6.7.0-1ubuntu0.1~esm2USN-5662-1

libonig2Ubuntu

Fixed in:5.9.1-1ubuntu1.1+esm3USN-5662-1

Fixed in:5.9.6-1ubuntu0.1+esm3USN-5662-1

libonig4Ubuntu

Fixed in:6.7.0-1ubuntu0.1~esm2USN-5662-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Exploit Intelligence

4.05%probability of exploitation in 30 days

89thpercentile

Elevated risk: more likely to be exploited than 89% of all known CVEs.

References

Patch1

github.com

Exploit1

github.com

Third-Party Advisory1

github.com

Release Notes1

github.com

Other references2

Related Vulnerabilities

Other CWE-125 (Out-of-bounds Read) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2014-0160	High	7.5	100%	KEV	Fix
CVE-2025-5777	High	7.5	100%	KEV + Ransom	Fix
CVE-2021-4034	High	7.8	95%	KEV	Fix
CVE-2023-21769	High	7.5	92%	-	Fix
CVE-2023-49285	High	8.6	89%	-	Fix
CVE-2020-8794	Critical	9.8	89%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.