CVE-2013-0156

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 2.0 •
EPSS 93.12% Top 5%
Vendor Advisory redhat.com Vendor Advisory apple.com Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory rubyonrails.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89d?dmode=source&output=gplain third party advisory mailing list
http://www.insinuator.net/2013/01/rails-yaml/ third party advisory
http://rhn.redhat.com/errata/RHSA-2013-0155.html third party advisory vendor advisory
http://www.kb.cert.org/vuls/id/628463 third party advisory us government resource
https://community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156 third party advisory
http://www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.html third party advisory
http://www.kb.cert.org/vuls/id/380039 third party advisory us government resource
http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html vendor advisory mailing list third party advisory
http://www.debian.org/security/2013/dsa-2604 third party advisory vendor advisory
http://ics-cert.us-cert.gov/advisories/ICSA-13-036-01A third party advisory us government resource
http://rhn.redhat.com/errata/RHSA-2013-0154.html third party advisory vendor advisory
https://puppet.com/security/cve/cve-2013-0156 third party advisory
http://weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/ vendor advisory
http://rhn.redhat.com/errata/RHSA-2013-0153.html third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2013-0156?
CVE-2013-0156 has been scored as a high severity vulnerability.
How to fix CVE-2013-0156?
To fix CVE-2013-0156, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2013-0156 being actively exploited in the wild?
It is possible that CVE-2013-0156 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~93% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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