DEBIAN-CVE-2019-12290
- Source
- https://security-tracker.debian.org/tracker/CVE-2019-12290
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2019-12290.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2019-12290
- Upstream
- Published
- 2019-10-22T16:15:10Z
- Modified
- 2025-09-25T22:40:29Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
- Summary
- [none]
- Details
-
GNU libidn2 before 2.2.0 fails to perform the roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. This makes it possible in some circumstances for one domain to impersonate another. By creating a malicious domain that matches a target domain except for the inclusion of certain punycoded Unicode characters (that would be discarded when converted first to a Unicode label and then back to an ASCII label), arbitrary domains can be impersonated.
- References
Affected packages
Debian:11 / libidn2
Package
- Name
- libidn2
- Purl
- pkg:deb/debian/libidn2?arch=source
Debian:12 / libidn2
Package
- Name
- libidn2
- Purl
- pkg:deb/debian/libidn2?arch=source
Debian:13 / libidn2
Package
- Name
- libidn2
- Purl
- pkg:deb/debian/libidn2?arch=source
Debian:14 / libidn2
Package
- Name
- libidn2
- Purl
- pkg:deb/debian/libidn2?arch=source