#VU33124 Code Injection - CVE-2011-3186

Vulnerability identifier: #VU33124

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-3186

CWE-ID: CWE-94

Exploitation vector: Network

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

CRLF injection vulnerability in actionpack/lib/action_controller/response.rb in Ruby on Rails 2.3.x before 2.3.13 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via the Content-Type header.

Mitigation
Install update from vendor's website.

External links
https://groups.google.com/group/rubyonrails-security/msg/bbe342e43abaa78c?dmode=source&output=gplain
https://lists.fedoraproject.org/pipermail/package-announce/2011-September/065137.html
https://secunia.com/advisories/45921
https://www.debian.org/security/2011/dsa-2301
https://www.openwall.com/lists/oss-security/2011/08/17/1
https://www.openwall.com/lists/oss-security/2011/08/19/11
https://www.openwall.com/lists/oss-security/2011/08/20/1
https://www.openwall.com/lists/oss-security/2011/08/22/13
https://www.openwall.com/lists/oss-security/2011/08/22/14
https://www.openwall.com/lists/oss-security/2011/08/22/5
https://bugzilla.redhat.com/show_bug.cgi?id=732156
https://github.com/rails/rails/commit/11dafeaa7533be26441a63618be93a03869c83a9

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.