CVE-2018-20060
Critical
Description
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.
SeverityCritical
CVSS9.8
Exploit probability—
Product
Python Urllib3
PublishedDec 11, 2018
First seenDec 11, 2018
How to fix
Update
- python urllib31.23 or later
- urllib31.23 or later
Vendor advisories
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5SJERZEJDSUYQP7BNBXMBHRHGY26HRZD/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XWP36YW3KSVLXDBY3QJKDYEPCIMN3VQZ/
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BXLAXHM3Z6DUCXZ7ZXZ2EAYJXWDCZFCT/
- usn.ubuntu.com/3990-1/
- access.redhat.com/errata/RHSA-2019:2272
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| python urllib3 | v < 1.23 | 1.23 |
| fedoraproject fedora | 28, 29, 30 | — |
| urllib3PyPI | v < 1.23 | 1.23 |
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