Improper validation of URL in GNU Wget

1) Input validation error

EUVDB-ID: #VU93077

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-38428

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to improper input validation of URL when parsing strings with semicolons within the scheme_leading_string() function in url.c. A remote attacker can pass a specially crafted URL to the application and influence its behavior in which data that was supposed to be in the userinfo subcomponent is misinterpreted to be part of the host subcomponent.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

wget: 1.5.3 - 1.24.5

External links

http://lists.gnu.org/archive/html/bug-wget/2024-06/msg00005.html
http://git.savannah.gnu.org/cgit/wget.git/commit/?id=ed0c7c7e0e8f7298352646b2fd6e06a11e242ace

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.