CVE-2019-19203

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-125

• 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/

Published

Nov 21, 2019

Last Modified

Jun 17, 2026

Status

Modified

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