CVE-2019-18224

critical

Description

idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.

References

https://www.debian.org/security/2020/dsa-4613

https://usn.ubuntu.com/4168-1/

https://security.gentoo.org/glsa/202003-63

https://seclists.org/bugtraq/2020/Feb/4

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/

https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1

https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c

https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html

Details

Source: Mitre, NVD

Published: 2019-10-21

Updated: 2023-11-07

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical