Security Features in GNU wget

Published: 2016-06-30 | Updated: 2020-07-28

Risk	High
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2016-4971
CWE-ID	CWE-254
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available.
Vulnerable software	wget Server applications / File servers (FTP/HTTP)
Vendor	GNU

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Security Features

EUVDB-ID: #VU32275

Risk: High

CVSSv4.0: 7.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2016-4971

CWE-ID: CWE-254 - Security Features

Exploit availability: Yes

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

GNU wget before 1.18 allows remote servers to write to arbitrary files by redirecting a request from HTTP to a crafted FTP resource.

Mitigation

Install update from vendor's website.

Vulnerable software versions

wget: 1.5.3 - 1.17.1

CPE2.3

External links

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.