CVE-2019-18224
CRITICALGNU libidn2 < 2.1.1 - Heap-Based Buffer Overflow in idn2_to_ascii_4i
Title source: llmDescription
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 (11)
Core 11
Core References
Release Notes, Third Party Advisory x_refsource_misc
https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1
Patch, Third Party Advisory x_refsource_misc
https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c
Exploit, Issue Tracking, Third Party Advisory x_refsource_misc
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420
Vendor Advisory vendor-advisory
x_refsource_ubuntu
https://usn.ubuntu.com/4168-1/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html
Mailing List vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html
Third Party Advisory vendor-advisory
x_refsource_debian
https://www.debian.org/security/2020/dsa-4613
Mailing List mailing-list
x_refsource_bugtraq
https://seclists.org/bugtraq/2020/Feb/4
Third Party Advisory vendor-advisory
x_refsource_gentoo
https://security.gentoo.org/glsa/202003-63
Scores
CVSS v3
9.8
EPSS
0.0240
EPSS Percentile
85.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-787
Status
published
Products (1)
gnu/libidn2
< 2.1.1
Published
Oct 21, 2019
Tracked Since
Feb 18, 2026