CVE-2018-25091 Information

Description

urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e. a redirect that differs in host port or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).

Reference

https://github.com/urllib3/urllib3/compare/1.24.1…1.24.2 https://github.com/urllib3/urllib3/compare/1.24.1…1.24.2 https://github.com/urllib3/urllib3/issues/1510 https://github.com/urllib3/urllib3/issues/1510 https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc https://github.com/urllib3/urllib3/commit/adb358f8e06865406d1f05e581a16cbea2136fbc urllib3 before 1.24.2 does not remove the authorization HTTP header when following a cross-origin redirect (i.e. a redirect that differs in host port or scheme). This can allow for credentials in the authorization header to be exposed to unintended hosts or transmitted in cleartext. NOTE: this issue exists because of an incomplete fix for CVE-2018-20060 (which was case-sensitive).