CVE-2019-12290 (GCVE-0-2019-12290)
Vulnerability from cvelistv5
Published
2019-10-22 15:14
Modified
2026-10-14 06:49
Severity ?
CWE
  • n/a
Summary
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
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

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