CVE-2019-12290

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.
Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:libidn2:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2019-10-22 16:15

Updated : 2024-02-04 20:39


NVD link : CVE-2019-12290

Mitre link : CVE-2019-12290

CVE.ORG link : CVE-2019-12290


JSON object : View

Products Affected

gnu

  • libidn2
CWE
CWE-20

Improper Input Validation