CVE-2019-13224

critical

Description

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.

References

https://github.com/kkos/oniguruma/commit/0f7f61ed1b7b697e283e37bd2d731d0bd57adb55

https://lists.debian.org/debian-lts-announce/2019/07/msg00013.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/SNL26OZSQRVLEO6JRNUVIMZTICXBNEQW/

https://lists.fedoraproject.org/archives/list/[email protected]/message/JWCPDTZOIUKGMFAD5NAKUB7FPJFAIQN5/

https://usn.ubuntu.com/4088-1/

https://support.f5.com/csp/article/K00103182

https://support.f5.com/csp/article/K00103182?utm_source=f5support&utm_medium=RSS

https://security.gentoo.org/glsa/201911-03

Details

Source: MITRE

Published: 2019-07-10

Updated: 2022-07-20

Type: CWE-416

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

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

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL