Input validation error in Libidn2 - CVE-2019-12290
Published: October 30, 2019
Vulnerability identifier: #VU22428
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2019-12290
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: GNU
Affected software:
Libidn2
Libidn2
Detailed vulnerability description
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to libidn2 fails to perform roundtrip checks specified in RFC3490 Section 4.2 when converting A-labels to U-labels. A remote attacker can use a specially crafted domain name to impersonate a trusted website.
How to mitigate CVE-2019-12290
Install updates from vendor's website.