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Test ID:1.3.6.1.4.1.25623.1.0.702613
Category:Debian Local Security Checks
Title:Debian Security Advisory DSA 2613-1 (rails - insufficient input validation)
Summary:Lawrence Pit discovered that Ruby on Rails, a web development framework,;is vulnerable to a flaw in the parsing of JSON to YAML. Using a specially;crafted payload attackers can trick the backend into decoding a subset of;YAML.;;The vulnerability has been addressed by removing the YAML backend and;adding the OkJson backend.
Description:Summary:
Lawrence Pit discovered that Ruby on Rails, a web development framework,
is vulnerable to a flaw in the parsing of JSON to YAML. Using a specially
crafted payload attackers can trick the backend into decoding a subset of
YAML.

The vulnerability has been addressed by removing the YAML backend and
adding the OkJson backend.

Affected Software/OS:
rails on Debian Linux

Solution:
For the stable distribution (squeeze), this problem has been fixed in
version 2.3.5-1.2+squeeze6.

For the testing distribution (wheezy), this problem will be fixed soon.

For the unstable distribution (sid), this problem has been fixed in
version 2.3.14-6 of the ruby-activesupport-2.3 package.

The 3.2 version of rails as found in Debian wheezy and sid is not
affected by the problem.

We recommend that you upgrade your rails packages.

CVSS Score:
7.5

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2013-0333
http://lists.apple.com/archives/security-announce/2013/Mar/msg00002.html
http://lists.apple.com/archives/security-announce/2013/Jun/msg00000.html
CERT/CC vulnerability note: VU#628463
http://www.kb.cert.org/vuls/id/628463
Debian Security Information: DSA-2613 (Google Search)
http://www.debian.org/security/2013/dsa-2613
https://groups.google.com/group/rubyonrails-security/msg/52179af76915e518?dmode=source&output=gplain
RedHat Security Advisories: RHSA-2013:0201
http://rhn.redhat.com/errata/RHSA-2013-0201.html
RedHat Security Advisories: RHSA-2013:0202
http://rhn.redhat.com/errata/RHSA-2013-0202.html
RedHat Security Advisories: RHSA-2013:0203
http://rhn.redhat.com/errata/RHSA-2013-0203.html
CopyrightCopyright (C) 2013 Greenbone Networks GmbH http://greenbone.net

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