Path traversal in lighttpd

1) Path traversal

EUVDB-ID: #VU32560

Risk: Medium

CVSSv3.1: 4.8 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2014-2324

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to gain access to sensitive information.

Multiple directory traversal vulnerabilities in (1) mod_evhost and (2) mod_simple_vhost in lighttpd before 1.4.35 allow remote attackers to read arbitrary files via a .. (dot dot) in the host name, related to request_check_hostname.

Mitigation

Install update from vendor's website.

Vulnerable software versions

lighttpd: 1.4.1 - 1.4.34

External links

http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2014_01.txt
http://lists.opensuse.org/opensuse-security-announce/2014-03/msg00023.html
http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2014-04/msg00006.html
http://marc.info/?l=bugtraq&m=141576815022399&w=2
http://seclists.org/oss-sec/2014/q1/561
http://seclists.org/oss-sec/2014/q1/564
http://secunia.com/advisories/57404
http://secunia.com/advisories/57514
http://www.debian.org/security/2014/dsa-2877
http://www.lighttpd.net/2014/3/12/1.4.35/
http://www.securityfocus.com/bid/66157

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. However, proof of concept for this vulnerability is available.