Vulnerability 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 Score
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Gnu | Libidn2 | < 2.1.1 |
Related Weaknesses (CWE)
References
- 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=12420ExploitIssue TrackingThird Party Advisory
- https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8PatchThird Party Advisory
- https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1Release NotesThird Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedorapro
- 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
- 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=12420ExploitIssue TrackingThird Party Advisory
- https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8PatchThird Party Advisory
FAQ
What is CVE-2019-18224?
CVE-2019-18224 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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.
How severe is CVE-2019-18224?
CVE-2019-18224 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2019-18224?
Check the references section above for vendor advisories and patch information. Affected products include: Gnu Libidn2.