#VU32402 Input validation error in Django - CVE-2015-5144

Vulnerability identifier: #VU32402

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-2015-5144

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Django
Web applications / CMS

Vendor: Django Software Foundation

Description

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

Django before 1.4.21, 1.5.x through 1.6.x, 1.7.x before 1.7.9, and 1.8.x before 1.8.3 uses an incorrect regular expression, which allows remote attackers to inject arbitrary headers and conduct HTTP response splitting attacks via a newline character in an (1) email message to the EmailValidator, a (2) URL to the URLValidator, or unspecified vectors to the (3) validate_ipv4_address or (4) validate_slug validator.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Django: 1.4.1 - 1.8.2

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External links
https://lists.fedoraproject.org/pipermail/package-announce/2015-November/172084.html
https://lists.opensuse.org/opensuse-updates/2015-10/msg00043.html
https://lists.opensuse.org/opensuse-updates/2015-10/msg00046.html
https://www.debian.org/security/2015/dsa-3305
https://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html
https://www.securityfocus.com/bid/75665
https://www.securitytracker.com/id/1032820
https://www.ubuntu.com/usn/USN-2671-1
https://security.gentoo.org/glsa/201510-06
https://www.djangoproject.com/weblog/2015/jul/08/security-releases/

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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.