#VU44054 Input validation error in Tornado - CVE-2012-2374

Vulnerability identifier: #VU44054

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-2012-2374

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Tornado
Server applications / Web servers

Vendor: Tornado

Description

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

CRLF injection vulnerability in the tornado.web.RequestHandler.set_header function in Tornado before 2.2.1 allows remote attackers to inject arbitrary HTTP headers and conduct HTTP response splitting attacks via crafted input.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Tornado: 1.0 - 2.1.1

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External links
https://openwall.com/lists/oss-security/2012/05/18/12
https://secunia.com/advisories/49185
https://www.openwall.com/lists/oss-security/2012/05/18/6
https://www.securityfocus.com/bid/53612
https://www.tornadoweb.org/documentation/releases/v2.2.1.html

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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.