CVE-2015-7551

The Fiddle::Handle implementation in ext/fiddle/handle.c in Ruby before 2.0.0-p648, 2.1 before 2.1.8, and 2.2 before 2.2.4, as distributed in Apple OS X before 10.11.4 and other products, mishandles tainting, which allows context-dependent attackers to execute arbitrary code or cause a denial of service (application crash) via a crafted string, related to the DL module and the libffi library. NOTE: this vulnerability exists because of a CVE-2009-5147 regression.

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 (CVE-2015-7551).

These are all security issues fixed in the libruby2_2-2_2-2.2.5-1.5 package on the GA media of openSUSE Tumbleweed.

This update for ruby fixes the following issues:

Secuirty issues fixed:

• CVE-2015-1855: Ruby OpenSSL Hostname Verification (bsc#926974)
• CVE-2015-7551: Unsafe tainted string usage in Fiddle and DL (bsc#959495)

Bugfixes:

• fix small mistake in the backport for (bsc#986630)

This ruby2.1 update to version 2.1.9 fixes the following issues:

Security issues fixed:

• CVE-2016-2339: heap overflow vulnerability in the Fiddle::Function.new'initialize' (bsc#1018808)
• CVE-2015-7551: Unsafe tainted string usage in Fiddle and DL (bsc#959495)
• CVE-2015-3900: hostname validation does not work when fetching gems or making API requests (bsc#936032)
• CVE-2015-1855: Ruby'a OpenSSL extension suffers a vulnerability through overly permissive matching of hostnames (bsc#926974)
• CVE-2014-4975: off-by-one stack-based buffer overflow in the encodes() function (bsc#887877)

Bugfixes:

• SUSEconnect doesn't handle domain wildcards in no_proxy environment variable properly (bsc#1014863)
• Segmentation fault after pack & ioctl & unpack (bsc#909695)
• Ruby:HTTP Header injection in 'net/http' (bsc#986630)

ChangeLog:

• http://svn.ruby-lang.org/repos/ruby/tags/v2_1_9/ChangeLog

It was discovered that Ruby DL::dlopen incorrectly handled opening libraries. An attacker could possibly use this issue to open libraries with tainted names. This issue only applied to Ubuntu 14.04 LTS. (CVE-2009-5147)

Tony Arcieri, Jeffrey Walton, and Steffan Ullrich discovered that the Ruby OpenSSL extension incorrectly handled hostname wildcard matching. This issue only applied to Ubuntu 14.04 LTS. (CVE-2015-1855)

Christian Hofstaedtler discovered that Ruby Fiddle::Handle incorrectly handled certain crafted strings. An attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS. (CVE-2015-7551)

It was discovered that Ruby Net::SMTP incorrectly handled CRLF sequences. A remote attacker could possibly use this issue to inject SMTP commands. (CVE-2015-9096)

Marcin Noga discovered that Ruby incorrectly handled certain arguments in a TclTkIp class method. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2016-2337)

It was discovered that Ruby Fiddle::Function.new incorrectly handled certain arguments. An attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS. (CVE-2016-2339)

It was discovered that Ruby incorrectly handled the initialization vector (IV) in GCM mode. An attacker could possibly use this issue to bypass encryption. (CVE-2016-7798)