CVE-2019-18224
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2019-18224
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2019-18224.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2019-18224
- Downstream
- Related
- Published
- 2019-10-21T17:15:09Z
- Modified
- 2025-10-15T10:34:26.872025Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- [none]
- Details
-
idn2toascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.
- References
-
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420
- https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c
- https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1
- https://security.gentoo.org/glsa/202003-63
- https://www.debian.org/security/2020/dsa-4613
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html
- http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
- https://seclists.org/bugtraq/2020/Feb/4
- https://usn.ubuntu.com/4168-1/
Affected packages
Git / github.com/libidn/libidn2
Affected ranges
- Type
- GIT
- Repo
- https://github.com/libidn/libidn2
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
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
Database specific
vanir_signatures
[
{
"signature_type": "Function",
"id": "CVE-2019-18224-d1b63e78",
"target": {
"function": "idn2_to_ascii_4i",
"file": "lib/lookup.c"
},
"signature_version": "v1",
"deprecated": false,
"source": "https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c",
"digest": {
"function_hash": "214985951242038317322025943762415417586",
"length": 701.0
}
},
{
"signature_type": "Line",
"id": "CVE-2019-18224-e627a1e0",
"target": {
"file": "lib/lookup.c"
},
"signature_version": "v1",
"deprecated": false,
"source": "https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c",
"digest": {
"threshold": 0.9,
"line_hashes": [
"218593188083772802622278516276379885292",
"75544740509718557889899472802812714157",
"88559900838356515207564908305722819563",
"162592913917631513379925092713417473222",
"97451075533321452369957433137531049196",
"287318457797403020141752624756010271903"
]
}
}
]