CVE-2019-12290
- State
- Published
- Severity
- Not scored
- Published
- Oct 22, 2019
- Updated
- Oct 14, 2026
- Reserved
- May 22, 2019
Description
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.
Scores
The record has no CVSS score.
Weaknesses
The record names no weakness.
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- https://gitlab.com/libidn/libidn2/merge_requests/71
- https://gitlab.com/libidn/libidn2/commit/241e8f486134793cb0f4a5b0e5817a97883401f5
- https://gitlab.com/libidn/libidn2/commit/614117ef6e4c60e1950d742e3edf0a0ef8d389de
- USN-4168-1vendor-advisory
- FEDORA-2019-f454c7a118vendor-advisory
- FEDORA-2019-20e9736c97vendor-advisory
- FEDORA-2019-28d3cd20c0vendor-advisory
- FEDORA-2019-1ebb5c928evendor-advisory
- openSUSE-SU-2019:2611vendor-advisory
- openSUSE-SU-2019:2613vendor-advisory
- FEDORA-2019-160303ebebvendor-advisory
- GLSA-202003-63vendor-advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html
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