Cryptographic issues in lighttpd

1) Cryptographic issues

EUVDB-ID: #VU32619

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2013-4508

CWE-ID: CWE-310 - Cryptographic Issues

Exploit availability: No

Description

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

lighttpd before 1.4.34, when SNI is enabled, configures weak SSL ciphers, which makes it easier for remote attackers to hijack sessions by inserting packets into the client-server data stream or obtain sensitive information by sniffing the network. Per: http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_01.txt "All versions from 1.4.24 (first version supporting SNI) up to and including 1.4.33."

Mitigation

Install update from vendor's website.

Vulnerable software versions

lighttpd: 1.4.1 - 1.4.33

External links

http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2013_01.txt
http://lists.opensuse.org/opensuse-updates/2014-01/msg00049.html
http://marc.info/?l=bugtraq&m=141576815022399&w=2
http://openwall.com/lists/oss-security/2013/11/04/19
http://redmine.lighttpd.net/issues/2525
http://redmine.lighttpd.net/projects/lighttpd/repository/revisions/2913/diff/
http://www.debian.org/security/2013/dsa-2795

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.