Vulnerability identifier: #VU82979

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-25091

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

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

Vendor:

Description

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

The vulnerability exists due to urllib3 does not remove the authorization HTTP header when following a cross-origin redirect. A remote attacker can gain access to sensitive information.

Note, the vulnerability exists due to incomplete fix for #VU26413 (CVE-2018-20060).

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://github.com/urllib3/urllib3/compare/1.24.1...1.24.2
http://github.com/urllib3/urllib3/issues/1510
http://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc

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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.