Input validation error in Tornado

1) Input validation error

EUVDB-ID: #VU44054

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 - Improper input validation

Exploit availability: No

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

CPE2.3

• cpe:2.3:a:tornado:tornado:1.0:*:*:*:*:*:*:*
• cpe:2.3:a:tornado:tornado:1.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:tornado:tornado:1.1:*:*:*:*:*:*:*

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

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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