GCVE-110-MAGEIA-2016-354

The ‘mkdir’ procedure of GNU Guile, an implementation of the Scheme programming language, temporarily changed the process’ umask to zero. During that time window, in a multithreaded application, other threads could end up creating files with insecure permissions (CVE-2016-8605). GNU Guile, an implementation of the Scheme language, provides a “REPL server” which is a command prompt that developers can connect to for live coding and debugging purposes. The REPL server is vulnerable to the HTTP inter-protocol attack. This constitutes a remote code execution vulnerability for developers running a REPL server that listens on a loopback device or private network (CVE-2016-8606). The guile package has been updated to version 2.0.13, fixing these issues and other bugs. See the upstream release announcements for details.