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CVE-2019-18224

Good to know:

Date: October 21, 2019

idn2_to_ascii_4i in lib/lookup.c in GNU libidn2 before 2.1.1 has a heap-based buffer overflow via a long domain string.

Language: C

Severity Score

9.8

Related Resources (18)

Url: https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1

Url: https://usn.ubuntu.com/4168-1/

Url: https://seclists.org/bugtraq/2020/Feb/4

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/

Url: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2019-18224

Url: https://access.redhat.com/security/cve/CVE-2019-18224

Url: http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html

Url: https://nvd.nist.gov/vuln/detail/CVE-2019-18224

Url: https://security-tracker.debian.org/tracker/CVE-2019-18224

Url: https://www.debian.org/security/2020/dsa-4613

Url: https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c

Url: http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html

Url: https://security.gentoo.org/glsa/202003-63

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/

Url: https://www.mend.io/vulnerability-database/CVE-2019-18224

Severity Score

9.8

Weakness Type (CWE)

Out-of-bounds Write

CWE-787

Top Fix

Upgrade Version

Upgrade to version libidn2-2.1.1

CVSS v3.1

Base Score:	9.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	7.5
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

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