CVE-2019-12290 Other in n/a
Attackers can impersonate arbitrary domains by exploiting missing roundtrip checks in libidn2, bypassing domain validation mechanisms.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-12290?
CVE-2019-12290 is a high-severity vulnerability in n/a, published on 22 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
GNU libidn2 before 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.
Weakness: CWE-20
Which versions are affected by CVE-2019-12290?
It affects 1 product.
Products include Gnu Libidn2.
How do I fix CVE-2019-12290?
Upgrade to a fixed version.
Is CVE-2019-12290 being exploited?
There is no known exploitation of CVE-2019-12290 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as ALPINE-CVE-2019-12290, CLEANSTART-2024-IG59808, DEBIAN-CVE-2019-12290, GHSA-5pjp-55fh-7frw, UBUNTU-CVE-2019-12290.