Vulnerability identifier: #VU14317

Vulnerability risk: Medium

CVSSv3.1: 5.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
lighttpd
Server applications / Web servers

Vendor: lighttpd

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to insufficient check of path names under certain conditions in mod_alias (mod_alias.c). A remote attacker can submit a specially crafted URL and gain access to potentially sensitive information.

Mitigation
Update to version 1.4.50.

Vulnerable software versions

lighttpd: 1.4.1 - 1.4.49

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External links
http://github.com/lighttpd/lighttpd1.4/commit/2105dae0f9d7a964375ce681e53cb165375f84c1#diff-40a405a...
http://www.lighttpd.net/2018/8/13/1.4.50/

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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.