guile-2.0.13 (CVE-2016-8605 CVE-2016-8606)

[Pierre Labastie]

New point version

Description
===========

- CVE-2016-8605 (information disclosure)

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. For example, mkdir
without the optional mode argument would create directories
as 0777.

- CVE-2016-8606 (arbitrary code execution)

It was  reported that 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.
Applications that do not run a REPL server, as is usually
the case, are unaffected.

Impact
======

A remote attacker is able to execute arbitrary code via a HTTP
inter-protocol attack if the REPL server is listening on a
loopback device or private network.

Running a multi-threaded guile application can cause
directories or files to be created with world
readable/writable/executable permissions during a small window
which leads to information disclosure.

​http://www.openwall.com/lists/oss-security/2016/10/11/1

​http://www.openwall.com/lists/oss-security/2016/10/12/2

[bdubbs@…]

Fixed at revision 17890.

[Douglas R. Reno]

Bruce, just updating the description with the list of security fixes and marking as high. Missed these while I was away from both of my email accounts.