Branch p9 update bulletin.

Package libidn2 updated to version 2.2.0-alt1 for branch p9 in task 229971.

Published: 2019-11-22

BDU:2020-01339

Уязвимость компонента RFC3490 библиотеки Libidn2, позволяющая нарушителю создать вредоносный домен, который соответствует целевому домену

Severity: HIGH (7.5) Vector: AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References:

CVE-2019-12290

Published: 2019-10-22
Modified: 2024-11-21

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.

Severity: HIGH (7.5) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References:

Version: 2.1.0

Branch p9 update on 2019-05-25

ALT-BU-2019-3680-1

ALT-PU-2019-1908-1

Closed vulnerabilities

BDU:2020-01339

CVE-2019-12290