CVE-2019-13224

A use-after-free in onig_new_deluxe() in regext.c in Oniguruma 6.9.2 allows attackers to potentially cause information disclosure, denial of service, or possibly code execution by providing a crafted regular expression. The attacker provides a pair of a regex pattern and a string, with a multi-byte encoding that gets handled by onig_new_deluxe(). Oniguruma issues often affect Ruby, as well as common optional libraries for PHP and Rust.

• CWE-416

• https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/07/msg00013.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWCPDTZOIUKGMFAD5NAKUB7FPJFAIQN5/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SNL26OZSQRVLEO6JRNUVIMZTICXBNEQW/
• https://security.gentoo.org/glsa/201911-03Third Party Advisory
• https://support.f5.com/csp/article/K00103182Third Party Advisory
• https://support.f5.com/csp/article/K00103182?utm_source=f5support&amp%3Butm_medium=RSS
• https://usn.ubuntu.com/4088-1/Third Party Advisory
• https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55Patch, Third Party Advisory
• https://lists.debian.org/debian-lts-announce/2019/07/msg00013.htmlMailing List, Third Party Advisory
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWCPDTZOIUKGMFAD5NAKUB7FPJFAIQN5/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SNL26OZSQRVLEO6JRNUVIMZTICXBNEQW/
• https://security.gentoo.org/glsa/201911-03Third Party Advisory
• https://support.f5.com/csp/article/K00103182Third Party Advisory
• https://support.f5.com/csp/article/K00103182?utm_source=f5support&amp%3Butm_medium=RSS
• https://usn.ubuntu.com/4088-1/Third Party Advisory

Published

Jul 10, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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