CVE-2019-18224

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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/libidn/libidn2/compare/libidn2-2.1.0...libidn2-2.1.1	Release Notes Third Party Advisory
https://github.com/libidn/libidn2/commit/e4d1558aa2c1c04a05066ee8600f37603890ba8c	Patch Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=12420	Exploit Issue Tracking Third Party Advisory
https://usn.ubuntu.com/4168-1/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JDQVQ2XPV5BTZUFINT7AFJSKNNBVURNJ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/MINU5RKDFE6TKAFY5DRFN3WSFDS4DYVS/
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00009.html
http://lists.opensuse.org/opensuse-security-announce/2019-12/msg00008.html
https://www.debian.org/security/2020/dsa-4613
https://seclists.org/bugtraq/2020/Feb/4
https://security.gentoo.org/glsa/202003-63

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Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:libidn2:*:*:*:*:*:*:*:*

Information

Published : 2019-10-21 10:15

Updated : 2019-10-29 12:15

NVD link : CVE-2019-18224

Mitre link : CVE-2019-18224

JSON object : View

CWE

CWE-787

Out-of-bounds Write

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Products Affected

gnu

libidn2

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