Synopsis: Important: ruby security update
Advisory ID: SLSA-2018:0378-1
Issue Date: 2018-02-28
CVE Numbers: CVE-2017-14064
CVE-2017-0901
CVE-2017-0900
CVE-2017-0902
CVE-2017-0899
CVE-2017-14033
CVE-2017-10784
CVE-2017-0898
CVE-2017-0903
CVE-2017-17405
CVE-2017-17790
--
Security Fix(es):
* It was discovered that the Net::FTP module did not properly process
filenames in combination with certain operations. A remote attacker could
exploit this flaw to execute arbitrary commands by setting up a malicious
FTP server and tricking a user or Ruby application into downloading files
with specially crafted names using the Net::FTP module. (CVE-2017-17405)
* A buffer underflow was found in ruby's sprintf function. An attacker,
with ability to control its format string parameter, could send a
specially crafted string that would disclose heap memory or crash the
interpreter. (CVE-2017-0898)
* It was found that rubygems did not sanitize gem names during
installation of a given gem. A specially crafted gem could use this flaw
to install files outside of the regular directory. (CVE-2017-0901)
* A vulnerability was found where rubygems did not sanitize DNS responses
when requesting the hostname of the rubygems server for a domain, via a
_rubygems._tcp DNS SRV query. An attacker with the ability to manipulate
DNS responses could direct the gem command towards a different domain.
(CVE-2017-0902)
* A vulnerability was found where the rubygems module was vulnerable to an
unsafe YAML deserialization when inspecting a gem. Applications inspecting
gem files without installing them can be tricked to execute arbitrary code
in the context of the ruby interpreter. (CVE-2017-0903)
* It was found that WEBrick did not sanitize all its log messages. If logs
were printed in a terminal, an attacker could interact with the terminal
via the use of escape sequences. (CVE-2017-10784)
* It was found that the decode method of the OpenSSL::ASN1 module was
vulnerable to buffer underrun. An attacker could pass a specially crafted
string to the application in order to crash the ruby interpreter, causing
a denial of service. (CVE-2017-14033)
* A vulnerability was found where rubygems did not properly sanitize gems'
specification text. A specially crafted gem could interact with the
terminal via the use of escape sequences. (CVE-2017-0899)
* It was found that rubygems could use an excessive amount of CPU while
parsing a sufficiently long gem summary. A specially crafted gem from a
gem repository could freeze gem commands attempting to parse its summary.
(CVE-2017-0900)
* A buffer overflow vulnerability was found in the JSON extension of ruby.
An attacker with the ability to pass a specially crafted JSON input to the
extension could use this flaw to expose the interpreter's heap memory.
(CVE-2017-14064)
* The "lazy_initialize" function in lib/resolv.rb did not properly process
certain filenames. A remote attacker could possibly exploit this flaw to
inject and execute arbitrary commands. (CVE-2017-17790)
--
SL7
x86_64
ruby-2.0.0.648-33.el7_4.x86_64.rpm
ruby-debuginfo-2.0.0.648-33.el7_4.i686.rpm
ruby-debuginfo-2.0.0.648-33.el7_4.x86_64.rpm
ruby-libs-2.0.0.648-33.el7_4.i686.rpm
ruby-libs-2.0.0.648-33.el7_4.x86_64.rpm
rubygem-bigdecimal-1.2.0-33.el7_4.x86_64.rpm
rubygem-io-console-0.4.2-33.el7_4.x86_64.rpm
rubygem-json-1.7.7-33.el7_4.x86_64.rpm
rubygem-psych-2.0.0-33.el7_4.x86_64.rpm
ruby-devel-2.0.0.648-33.el7_4.x86_64.rpm
ruby-tcltk-2.0.0.648-33.el7_4.x86_64.rpm
noarch
ruby-irb-2.0.0.648-33.el7_4.noarch.rpm
rubygem-rdoc-4.0.0-33.el7_4.noarch.rpm
rubygems-2.0.14.1-33.el7_4.noarch.rpm
ruby-doc-2.0.0.648-33.el7_4.noarch.rpm
rubygem-minitest-4.3.2-33.el7_4.noarch.rpm
rubygem-rake-0.9.6-33.el7_4.noarch.rpm
rubygems-devel-2.0.14.1-33.el7_4.noarch.rpm
- Scientific Linux Development Team
