High severityNVD Advisory· Published Jan 13, 2013· Updated Jun 16, 2026
CVE-2013-0156
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
actionpackRubyGems | < 2.3.15 | 2.3.15 |
actionpackRubyGems | >= 3.0.0, < 3.0.19 | 3.0.19 |
actionpackRubyGems | >= 3.1.0, < 3.1.10 | 3.1.10 |
actionpackRubyGems | >= 3.2.0, < 3.2.11 | 3.2.11 |
Affected products
6- ghsa-coords2 versions
< 2.3.15+ 1 more
- (no CPE)range: < 2.3.15
- (no CPE)range: < 0.9.16-7.4
Patches
Vulnerability mechanics
References
21- ics-cert.us-cert.gov/advisories/ICSA-13-036-01AnvdThird Party AdvisoryUS Government Resource
- lists.apple.com/archives/security-announce/2013/Mar/msg00002.htmlnvdMailing ListThird Party Advisory
- rhn.redhat.com/errata/RHSA-2013-0153.htmlnvdThird Party AdvisoryWEB
- rhn.redhat.com/errata/RHSA-2013-0154.htmlnvdThird Party AdvisoryWEB
- rhn.redhat.com/errata/RHSA-2013-0155.htmlnvdThird Party AdvisoryWEB
- weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-released/nvdVendor Advisory
- www.debian.org/security/2013/dsa-2604nvdThird Party AdvisoryWEB
- www.fujitsu.com/global/support/software/security/products-f/sw-sv-rcve-ror201301e.htmlnvdThird Party AdvisoryWEB
- www.insinuator.net/2013/01/rails-yaml/nvdThird Party Advisory
- www.kb.cert.org/vuls/id/380039nvdThird Party AdvisoryUS Government ResourceWEB
- www.kb.cert.org/vuls/id/628463nvdThird Party AdvisoryUS Government ResourceWEB
- community.rapid7.com/community/metasploit/blog/2013/01/09/serialization-mischief-in-ruby-land-cve-2013-0156nvdThird Party AdvisoryWEB
- github.com/advisories/GHSA-jmgw-6vjg-jjwgghsaADVISORY
- groups.google.com/group/rubyonrails-security/msg/c1432d0f8c70e89dnvdThird Party AdvisoryWEB
- nvd.nist.gov/vuln/detail/CVE-2013-0156ghsaADVISORY
- puppet.com/security/cve/cve-2013-0156nvdThird Party Advisory
- weblog.rubyonrails.org/2013/1/28/Rails-3-0-20-and-2-3-16-have-been-releasedghsaWEB
- www.insinuator.net/2013/01/rails-yamlghsaWEB
- web.archive.org/web/20140111025708/http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.htmlghsaWEB
- web.archive.org/web/20160415043747/https://ics-cert.us-cert.gov/advisories/ICSA-13-036-01AghsaWEB
- web.archive.org/web/20160806154149/https://puppet.com/security/cve/cve-2013-0156ghsaWEB
News mentions
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