[arch-security] [ASA-201512-11] ruby: unsafe tainted string usage

[Levente Polyak]

Arch Linux Security Advisory ASA-201512-11
==========================================

Severity: Low
Date    : 2015-12-17
CVE-ID  : CVE-2015-7551
Package : ruby
Type    : unsafe tainted string usage
Remote  : Yes
Link    : https://wiki.archlinux.org/index.php/CVE

Summary
=======

The package ruby before version 2.2.4-1 is vulnerable to unsafe tainted
string usage.

Resolution
==========

Upgrade to 2.2.4-1.

# pacman -Syu "ruby>=2.2.4-1"

The problem has been fixed upstream in version 2.2.4.

Workaround
==========

None.

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

There is an unsafe tainted string vulnerability in Fiddle and DL. This
issue was originally reported and fixed with CVE-2009-5147 in DL, but
reappeared after DL was reimplemented using Fiddle and libffi.

Impact
======

A remote attacker is able to open a library via Fiddle with tainted
library name if passed from an untrusted input.

References
==========

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-7551
https://www.ruby-lang.org/en/news/2015/12/16/unsafe-tainted-string-usage-in-fiddle-and-dl-cve-2015-7551/

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