#VU103688 Information disclosure in wget - CVE-2021-31879

Vulnerability identifier: #VU103688

Vulnerability risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-31879

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
wget
Server applications / File servers (FTP/HTTP)

Vendor: GNU

Description

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

The vulnerability exists due to the application does not omit the Authorization header upon a redirect to a different origin. A remote attacker can gain access to credentials for another domain.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

wget: 1.5.3 - 7.13.2

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External links
https://mail.gnu.org/archive/html/bug-wget/2021-02/msg00002.html
https://security.netapp.com/advisory/ntap-20210618-0002/

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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.