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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Gnu Libidn2
PublishedOct 21, 2019
First seenOct 21, 2019
How to fix
Update
- gnu libidn22.1.1 or later
Vendor advisories
- usn.ubuntu.com/4168-1/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
- debian.org/security/2020/dsa-4613
- security.gentoo.org/glsa/202003-63
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| gnu libidn2 | v < 2.1.1 | 2.1.1 |
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