Description
The Red Hat docker package before 1.5.0-28, when using the --add-registry option, falls back to HTTP when the HTTPS connection to the registry fails, which allows man-in-the-middle attackers to conduct downgrade attacks and obtain authentication and image data by leveraging a network position between the client and the registry to block HTTPS traffic. NOTE: this vulnerability exists because of a CVE-2014-5277 regression.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Rhel Extras Other 7 | atomic | 0-0.9.git4ff7dbd.el7 | RHSA-2015:0776 |
| Red Hat Rhel Extras Other 7 | docker +1 | 1.5.0-28.el7 | RHSA-2015:0776 |
| Red Hat Rhel Extras Other 7 | docker-python | 1.0.0-22.el7 | RHSA-2015:0776 |
| Red Hat Rhel Extras Other 7 | python-websocket-client | 0.14.1-65.el7 | RHSA-2015:0776 |
Advisories 1
- RHSA-2015:0776 Red Hat Security Advisory: docker security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
References
- RHSA-2015:0776 vendor-advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1206443
- 73936 vdb-entry