ALT-PU-2019-1902-1

Package update libidn2 in branch sisyphus

Version2.2.0-alt1

Published2019-05-23

Max severityHIGH

Severity:

Closed issues (2)

HIGH7.5

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

Published: 2020-04-06Modified: 2024-04-27

CVSS 3.xHIGH 7.5

CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

CVSS 2.0HIGH 7.8

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:C/A:N

References

CVE-2019-12290

HIGH7.5

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.

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

CVSS 2.0MEDIUM 5.0

CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:P/A:N

CVSS 3.xHIGH 7.5

CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References