CVE-2019-19204

moderate-risk

Published 2019-11-21

An issue was discovered in Oniguruma 6.x before 6.9.4_rc2. In the function fetch_interval_quantifier (formerly known as fetch_range_quantifier) in regparse.c, PFETCH is called without checking PEND. This leads to a heap-based buffer over-read.

Do I need to act?

8.9% chance of exploitation in next 30 days

EPSS score — moderate exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 7.5/10 High

NETWORK / LOW complexity

Affected Products (5)

Oniguruma

Debian Linux

Fedora

Affected Vendors

Debian Fedoraproject Oniguruma Project

References (16)

Exploit https://github.com/ManhNDd/CVE-2019-19204

Exploit https://github.com/kkos/oniguruma/issues/162

Release Notes https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2

Third Party Advisory https://github.com/tarantula-team/CVE-2019-19204

Third Party Advisory https://lists.debian.org/debian-lts-announce/2019/12/msg00002.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

https://usn.ubuntu.com/4460-1/

Exploit https://github.com/ManhNDd/CVE-2019-19204

Exploit https://github.com/kkos/oniguruma/issues/162

Release Notes https://github.com/kkos/oniguruma/releases/tag/v6.9.4_rc2

Third Party Advisory https://github.com/tarantula-team/CVE-2019-19204

Third Party Advisory https://lists.debian.org/debian-lts-announce/2019/12/msg00002.html

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro...

https://usn.ubuntu.com/4460-1/

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moderate-risk

Severity 26/34 · High

Exploitability 10/34 · Low

Exposure 12/34 · Low