CVE-2019-12290

Priority
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.
Assigned-to
leosilva
Notes
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):DNE
Ubuntu 16.04 LTS (Xenial Xerus):DNE
Ubuntu 18.04 LTS (Bionic Beaver):released (2.0.4-1.1ubuntu0.2)
Ubuntu 20.04 LTS (Focal Fossa):not-affected
Ubuntu 20.10 (Groovy Gorilla):not-affected
Package
Upstream:needs-triage
Ubuntu 12.04 ESM (Precise Pangolin):DNE
Ubuntu 14.04 ESM (Trusty Tahr):needs-triage
Ubuntu 16.04 LTS (Xenial Xerus):needs-triage
Ubuntu 18.04 LTS (Bionic Beaver):DNE
Ubuntu 20.04 LTS (Focal Fossa):DNE
Ubuntu 20.10 (Groovy Gorilla):DNE
More Information

Updated: 2020-07-28 18:54:19 UTC (commit 7b6828437fde0509248708fcdb5b0f7587b85bd1)