Gentoo Linux Security Advisory GLSA 200712-11 – Mike Frysinger reported that the etc-update utility uses temporary files with the standard umask, which results in the files being world-readable when merging configuration files in a default setup. Versions less than 2.1.3.11 are affected.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/61801/glsa-200712-11.txt
Source: https://packetstormsecurity.com/files/61801/Gentoo-Linux-Security-Advisory-200712-11.html