CVE-2018-12556

The signature verification routine in install.sh in yarnpkg/website through 2018-06-05 only verifies that the yarn release is signed by any (arbitrary) key in the local keyring of the user, and does not pin the signature to the yarn release key, which allows remote attackers to sign tampered yarn release packages with their own key.

The signature verification routine in install.sh in yarnpkg/website through 2018-06-05 only verifies that the yarn release is signed by any (arbitrary) key in the local keyring of the user, and does not pin the signature to the yarn release key, which allows remote attackers to sign tampered yarn release packages with their own key.

La rutina de verificación de firma en install.sh en yarnpkg / website hasta 06-05-2018 solo verifica que la versión Yarn esté firmada por cualquier clave (arbitraria) en el llavero local del usuario, y no fija la firma en la clave de la versión Yarn, que permite a los atacantes remotos firmar paquetes de la versión Yarn manipulados con su propia clave.