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CVSSv2

CVE-2019-12290

Published: 22/10/2019 Updated: 07/11/2023
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 7.5 | Impact Score: 3.6 | Exploitability Score: 3.9
VMScore: 445
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N
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Vulnerability Summary

GNU libidn2 prior to 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.

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gnu libidn2

Vendor Advisories

Ubuntu Security Notice: libidn2 vulnerabilities
Several security issues were fixed in Libidn2 ...
Amazon Linux 2: ALAS2-2019-1373
heap-based buffer overflow in idn2_to_ascii_4i in lib/lookupc idn2_to_ascii_4i in lib/lookupc in GNU libidn2 before 211 has a heap-based buffer overflow via a long domain string(CVE-2019-18224) ...
Amazon Linux AMI: ALAS-2019-1327
idn2_to_ascii_4i in lib/lookupc in GNU libidn2 before 211 has a heap-based buffer overflow via a long domain string (CVE-2019-18224) GNU libidn2 before 220 fails to perform the roundtrip checks specified in RFC3490 Section 42 when converting A-labels to U-labels This makes it possible in some circumstances for one domain to impersonate anot ...

ICS Advisories

https://ics-cert.us-cert.gov/advisories/fd87a3fc00e025fdc5034360097d2bdf
Critical Infrastructure Sectors: Critical Manufacturing

References

CWE-20https://gitlab.com/libidn/libidn2/merge_requests/71https://gitlab.com/libidn/libidn2/commit/241e8f486134793cb0f4a5b0e5817a97883401f5https://gitlab.com/libidn/libidn2/commit/614117ef6e4c60e1950d742e3edf0a0ef8d389dehttps://usn.ubuntu.com/4168-1/http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.htmlhttp://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.htmlhttps://security.gentoo.org/glsa/202003-63https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/U6ZXL2RDNQRAHCMKWPOMJFKYJ344X4HL/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3UFT76Y7OSGPZV3EBEHD6ISVUM3DLARM/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KXDKYWFV6N2HHVSE67FFDM7G3FEL2ZNE/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RSI4TI2JTQWQ3YEUX5X36GTVGKO4QKZ5/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ONG3GJRRJO35COPGVJXXSZLU4J5Y42AT/https://usn.ubuntu.com/4168-1/https://nvd.nist.govhttps://www.cisa.gov/news-events/ics-advisories/icsa-23-348-10
CVSSv2
CVSSv2
CVSSv3
VMScore
Recommendations:
CVE-2022-38028CVE-2024-32406CVE-2024-25624IMAPCVE-2024-2310CVE-2024-0874CVE-2024-20359XXEremote code execution
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