The stringprep_utf8_nfkc_normalize function in lib/nfkc.c in libidn before 1.33 allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) via crafted UTF-8 data.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-libidn | Aug 30, 2017 | Sep 7, 2016 | |
| Debian | debian-upgrade-libidn | Sep 2, 2016 | Sep 1, 2016 | |
| Freebsd | freebsd-upgrade-package-libidn | Dec 10, 2025 | Jul 31, 2016 | |
| Gentoo Linux | gentoo-linux-upgrade-sys-libs-glibc | Aug 16, 2019 | Sep 7, 2016 | |
| Huawei Euleros 2_0_sp2 | huawei-euleros-2_0_sp2-upgrade-libidn | Dec 4, 2019 | Sep 7, 2016 | |
| Huawei Euleros 2_0_sp3 | huawei-euleros-2_0_sp3-upgrade-libidn | Sep 25, 2019 | Sep 7, 2016 | |
| Huawei Euleros 2_0_sp5 | huawei-euleros-2_0_sp5-upgrade-libidn | Nov 19, 2019 | Sep 7, 2016 | |
| Oracle Solaris | oracle-solaris-11-3-upgrade-library-libidn-1-33-0-175-3-12-0-2-0 | May 29, 2017 | Sep 7, 2016 | |
| Redhat_linux | no-fix-redhat-rpm-package | Jul 9, 2025 | Jan 14, 2016 | |
| Suse | — | suse-upgrade-libidnsuse-upgrade-libidn-32bitsuse-upgrade-libidn-develsuse-upgrade-libidn-toolssuse-upgrade-libidn-x86suse-upgrade-libidn11suse-upgrade-libidn11-32bitsuse-upgrade-libidn2-0suse-upgrade-libidn2-0-32bitsuse-upgrade-libidn2-develsuse-upgrade-sles12-docker-imagesuse-upgrade-sles12sp1-docker-image | Sep 7, 2016 | Sep 7, 2016 |
| Ubuntu | ubuntu-upgrade-libidn11 | Aug 24, 2016 | Aug 24, 2016 |
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