Vulnerability in Python Urllib3
CVE-2018-20060
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.045 (91.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000
Affected products
- Python Urllib3
- Fedoraproject Fedora — versions 28, 29, 30
Public proof-of-concept exploits
References
- github.com/urllib3/urllib3/issues/1316 (Third Party Advisory)
- github.com/urllib3/urllib3/pull/1346 (Third Party Advisory)
- github.com/urllib3/urllib3/blob/master/CHANGES.rst (Third Party Advisory, Release Notes)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Mitigation, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- usn.ubuntu.com/3990-1/ (vendor-advisory)
- access.redhat.com/errata/RHSA-2019:2272 (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2019-09/msg00039.html (vendor-advisory)
Frequently asked questions
- What is CVE-2018-20060?
- CVE-2018-20060 is a critical-severity vulnerability in Python Urllib3. CVSS score: 9.8/10. Published 2018-12-11.
- How severe is CVE-2018-20060?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-20060 known to be exploited?
- 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.