Vulnerability CVE-2013-1802
Published: 2013-04-09   Modified: 2013-04-10

Description:
The extlib gem 0.9.15 and earlier for Ruby does not properly restrict casts of string values, which might allow remote attackers to conduct object-injection attacks and execute arbitrary code, or cause a denial of service (memory and CPU consumption) by leveraging Action Pack support for (1) YAML type conversion or (2) Symbol type conversion, a similar vulnerability to CVE-2013-0156.

See advisories in our WLB2 database:
Topic
Author
Date
High
Rubygem actionpack various gems in aftermath issue
Marcus Meissner
02.03.2013

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:P/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.5/10
6.4/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
Partial
Partial
Affected software
Dan kubb -> Extlib 

 References:
https://github.com/datamapper/extlib/compare/b4f98174ec35ac96f76a08d5624fad05d22879b5...4540e7102b803624cc2eade4bb8aaaa934fc31c5
https://support.cloud.engineyard.com/entries/22915701-january-14-2013-security-vulnerabilities-httparty-extlib-crack-nori-update-these-gems-immediately
https://bugzilla.redhat.com/show_bug.cgi?id=917233
http://lists.opensuse.org/opensuse-security-announce/2013-04/msg00002.html
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