libidn/libidn2
CVE History
| CVE | Published | CVSS v3 | CVSS v2 |
|---|---|---|---|
| 7.5 HIGH | 5 MEDIUM | ||
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. | |||
| — | 7.5 HIGH | ||
Integer overflow in the _isBidi function in bidi.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact. | |||
| 9.8 CRITICAL | 7.5 HIGH | ||
Integer overflow in the decode_digit function in puny_decode.c in Libidn2 before 2.0.4 allows remote attackers to cause a denial of service or possibly have unspecified other impact. | |||