Information disclosure in GNU wget



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-20483
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 wget
Server applications / File servers (FTP/HTTP)

Vendor GNU

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU16783

Risk: Low

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

CVE-ID: CVE-2018-20483

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

Exploit availability: No

Description

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

The vulnerability exists due to set_file_metadata in xattr.c stores a file's origin URL in the user.xdg.origin.url metadata attribute of the extended attributes of the downloaded file. A local attacker can read this attribute, as demonstrated by getfattr and obtain credentials contained in the URL.

Mitigation

Update to version 1.20.1.

Vulnerable software versions

wget: 1.5.3 - 1.20

CPE2.3 External links

https://git.savannah.gnu.org/cgit/wget.git/tree/NEWS
https://twitter.com/marcan42/status/1077676739877232640


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.



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