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Fencer Intel
medium 4.3

CVE-2015-1843 json

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 regis…

published 11y ago modified 4mo ago also EUVD-2015-1954

cvss
4.3
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.6%
EPSS 1.6% chance of exploitation in 30 days, percentile 76%
public exploits
0
none known

Summary

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.

Patch / fix

  • docker RHEL 7 EXTRAS_OTHER 1.5.0-28.el7
  • atomic RHEL 7 EXTRAS_OTHER 0-0.9.git4ff7dbd.el7
  • docker-python RHEL 7 EXTRAS_OTHER 1.0.0-22.el7
  • docker-logrotate RHEL 7 EXTRAS_OTHER 1.5.0-28.el7
  • python-websocket-client RHEL 7 EXTRAS_OTHER 0.14.1-65.el7

red hat advisories RHSA-2015:0776

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-1843 updated cvss 5.1

docker: regression of CVE-2014-5277

  • Red Hat Enterprise Linux 7 Extras docker 1.5.0-28.el7, docker-python 1.0.0-22.el7, atomic 0-0.9.git4ff7dbd.el7, docker-logrotate 1.5.0-28.el7, python-websocket-client 0.14.1-65.el7
    fixed: vendor fix RHSA-2015:0776

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.62% chance of exploitation in the next 30 days, higher than 76% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:P/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.