漏洞描述
active_support/core_ext/hash/conversions.rb in Ruby on Rails before 2.3.15, 3.0.x before 3.0.19, 3.1.x before 3.1.10, and 3.2.x before 3.2.11 does not properly restrict casts of string values, which allows remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) involving nested XML entity references, by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion.
影响产品
修复建议
建议关注厂商安全公告，及时升级至已修复版本，并结合实际资产暴露情况采取缓解措施。
参考链接
rhn.redhat.comhttp://rhn.redhat.com/errata/RHSA-2013-0153.html↗www.insinuator.nethttp://www.insinuator.net/2013/01/rails-yaml/↗www.debian.orghttp://www.debian.org/security/2013/dsa-2604↗www.kb.cert.orghttp://www.kb.cert.org/vuls/id/628463↗ics-cert.us-cert.govhttp://ics-cert.us-cert.gov/advisories/ICSA-13-036-01A↗rhn.redhat.comhttp://rhn.redhat.com/errata/RHSA-2013-0155.html↗www.fujitsu.comhttp://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.html↗lists.apple.comhttp://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html↗weblog.rubyonrails.orghttp://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/↗community.rapid7.comhttps://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156↗puppet.comhttps://puppet.com/security/cve/cve-2013-0156↗rhn.redhat.comhttp://rhn.redhat.com/errata/RHSA-2013-0154.html↗www.kb.cert.orghttp://www.kb.cert.org/vuls/id/380039↗groups.google.comhttps://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplain↗