#VU32619 Cryptographic issues in lighttpd - CVE-2013-4508

Vulnerability identifier: #VU32619

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2013-4508

CWE-ID: CWE-310

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
lighttpd
Server applications / Web servers

Vendor: lighttpd

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

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

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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.