#VU92262 Information disclosure in urllib3 - CVE-2024-37891

Vulnerability identifier: #VU92262

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-37891

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
urllib3
Other software / Other software solutions

Vendor: shazow (Andrey Petrov)

Description

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

The vulnerability exists due to Prox-Authorization header is not stripped during cross-origin redirects when using urllib3's proxy support with ProxyManager. A remote attacker can gain obtain proxy credentials used by the library.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

urllib3: 1.0 - 2.2.1

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External links
https://github.com/urllib3/urllib3/security/advisories/GHSA-34jh-p97f-mpxf
https://github.com/urllib3/urllib3/commit/accff72ecc2f6cf5a76d9570198a93ac7c90270e

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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.