CVE-2019-19203

HighCVSS 7.5/10Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 7.5/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weakness enumeration

CWE-125

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://github.com/ManhNDd/CVE-2019-19203Exploit, Third Party Advisory
https://github.com/kkos/oniguruma/issues/163Exploit, Patch, Third Party Advisory
https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2Release Notes
https://github.com/tarantula-team/CVE-2019-19203Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/
https://github.com/ManhNDd/CVE-2019-19203Exploit, Third Party Advisory
https://github.com/kkos/oniguruma/issues/163Exploit, Patch, Third Party Advisory
https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2Release Notes
https://github.com/tarantula-team/CVE-2019-19203Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NO267PLHGYZSWX3XTRPKYBKD4J3YOU5V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V3MBNW6Z4DOXSCNWGBLQ7OA3OGUJ44WL/

Timeline

Published: Nov 21, 2019
Last modified: Jun 17, 2026
NVD status: Modified

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