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ALPINE-CVE-2019-12290 PUBLISHED CVSS 7.5 HIGH

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.

Risk Scores

CVSS v3.1
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected Products

VendorProductVersions
Alpine:v3.22libidn20, 0, 0
Alpine:v3.12libidn20, 0, 0
Alpine:v3.17libidn20, 0, 0
Alpine:v3.18libidn20, 0, 0
Alpine:v3.16libidn20, 0, 0
Alpine:v3.19libidn20, 0, 0
Alpine:v3.23libidn20, 0, 0
Alpine:v3.14libidn20, 0, 0
Alpine:v3.15libidn20, 0, 0
Alpine:v3.21libidn20, 0, 0
Alpine:v3.20libidn20, 0, 0
Alpine:v3.13libidn20, 0, 0

Timeline

References

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