Vulnerability identifier: #VU82978

Vulnerability risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-45803

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
urllib3
Web applications / Modules and components for CMS

Vendor: urlib3

Description

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

The vulnerability exists due to urllib3 does not remove the HTTP request body when redirecting HTTP response using status codes 301, 302, or 303, after the request had its method changed from one that could accept a request body (e.g. from POST to GET). A remote attacker can gain access to potentially sensitive information.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

urllib3: 2.0.0 - 2.0.6, 1.26.0 - 1.26.17, 1.25 - 1.25.11, 1.24 - 1.24.3, 1.2 - 1.23, 1.21 - 1.21.1, 1.19 - 1.19.1, 1.18 - 1.18.1, 1.15 - 1.15.1, 1.13 - 1.13.1, 1.10 - 1.10.4, 1.9 - 1.9.1, 1.8 - 1.8.3, 1.7 - 1.7.1, 1.0 - 1.0.2

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External links
http://github.com/urllib3/urllib3/security/advisories/GHSA-g4mx-q9vg-27p4
http://www.rfc-editor.org/rfc/rfc9110.html#name-get
http://github.com/urllib3/urllib3/commit/4e98d57809dacab1cbe625fddeec1a290c478ea9
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PPDPLM6UUMN55ESPQWJFLLIZY4ZKCNRX/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4R2Y5XK3WALSR3FNAGN7JBYV2B343ZKB/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5F5CUBAN5XMEBVBZPHFITBLMJV5FIJJ5/

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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.