CVE-2019-12290

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Source
https://cve.org/CVERecord?id=CVE-2019-12290
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-12290.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2019-12290
Downstream
Related
Published
2019-10-22T16:15:10.877Z
Modified
2026-04-09T06:25:23.799349Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Git / gitlab.com/libidn/libidn2

Affected ranges

Type
GIT
Repo
https://gitlab.com/libidn/libidn2
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
3db6427d9ef42483405bfa75f234792ac073239e
Fixed
241e8f486134793cb0f4a5b0e5817a97883401f5
Fixed
614117ef6e4c60e1950d742e3edf0a0ef8d389de
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.2.0"
        }
    ]
}

Affected versions

2.*
2.2.0
libidn2-0.*
libidn2-0.10
libidn2-0.11
libidn2-0.12
libidn2-0.13
libidn2-0.14
libidn2-0.15
libidn2-0.16
libidn2-0.3
libidn2-0.4
libidn2-0.5
libidn2-0.6
libidn2-0.7
libidn2-0.8
libidn2-0.9
libidn2-2.*
libidn2-2.0.0
libidn2-2.0.1
libidn2-2.0.2
libidn2-2.0.3
libidn2-2.0.4
libidn2-2.0.5
libidn2-2.1.0
libidn2-2.1.1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-12290.json"