CVE-2019-18224 Information

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.

CVSS Vector

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

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420 https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c https://github.com/libidn/libidn2/compare/libidn2-2.1.0…libidn2-2.1.1 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/ https://seclists.org/bugtraq/2020/Feb/4 https://security.gentoo.org/glsa/202003-63 https://usn.ubuntu.com/4168-1/ https://www.debian.org/security/2020/dsa-4613

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8