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CVE-2018-20060

Status Candidate

Overview

urllib3 before version 1.23 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.

Related Files

Ubuntu Security Notice USN-3990-1
Posted May 21, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3990-1 - It was discovered that urllib3 incorrectly removed Authorization HTTP headers when handled cross-origin redirects. This could result in credentials being sent to unintended hosts. This issue only affected Ubuntu 16.04 LTS, Ubuntu 18.04 LTS and Ubuntu 18.10. It was discovered that urllib3 incorrectly stripped certain characters from requests. A remote attacker could use this issue to perform CRLF injection. Various other issues were also addressed.

tags | advisory, remote, web
systems | linux, ubuntu
advisories | CVE-2018-20060, CVE-2019-11236, CVE-2019-11324
MD5 | 3d059044008da4cd52c623f4b0a8855b
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