Credentials disclosure via redirects in urllib3



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2018-25091
CWE-ID CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 urllib3
Web applications / Modules and components for CMS

Vendor urlib3

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Information disclosure

EUVDB-ID: #VU82979

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-25091

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

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

urllib3: before 1.24.2

CPE2.3 External links

https://github.com/urllib3/urllib3/compare/1.24.1...1.24.2
https://github.com/urllib3/urllib3/issues/1510
https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc


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.



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