7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.003 Low
EPSS
Percentile
71.2%
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.
cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12290
gitlab.com/libidn/libidn2/commit/241e8f486134793cb0f4a5b0e5817a97883401f5
gitlab.com/libidn/libidn2/commit/614117ef6e4c60e1950d742e3edf0a0ef8d389de
gitlab.com/libidn/libidn2/merge_requests/71
launchpad.net/bugs/cve/CVE-2019-12290
nvd.nist.gov/vuln/detail/CVE-2019-12290
security-tracker.debian.org/tracker/CVE-2019-12290
ubuntu.com/security/notices/USN-4168-1
7.5 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
HIGH
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
5 Medium
CVSS2
Access Vector
NETWORK
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
NONE
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:L/Au:N/C:N/I:P/A:N
0.003 Low
EPSS
Percentile
71.2%