Bug 2547596 (CVE-2026-92543)
| Summary: | CVE-2026-92543 github.com/moby/moby: Docker Engine: Certificate verification bypass via flawed registry DNS check | ||
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| Product: | [Other] Security Response | Reporter: | OSIDB Bzimport <bzimport> |
| Component: | vulnerability | Assignee: | Product Security DevOps Team <prodsec-dev> |
| Status: | NEW --- | QA Contact: | |
| Severity: | high | Docs Contact: | |
| Priority: | high | ||
| Version: | unspecified | CC: | akhatavk, amctagga, aoconnor, aos-team-art-private, asdas, bniver, dpaolell, flucifre, gmeno, gparvin, groman, jbalunas, jdelft, jupierce, lchilton, lgarciaa, mbenjamin, mbiarnes, mhackett, ppalepu, ppostler, prdhamdh, rhaigner, rhel-process-autobot, sfeifer, sghai, sidsharm, sostapov, suppawar, tsze, vereddy, vlaad, watson-tool-maintainers |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | --- | |
| Doc Text: |
A flaw was found in Docker Engine. This vulnerability can lead to information disclosure or container image tampering by allowing an attacker to intercept unencrypted registry traffic. The flaw exists because the engine disables Transport Layer Security (TLS) certificate verification if any resolved address of a registry hostname matches a trusted local loopback network. A remote attacker capable of manipulating Domain Name System (DNS) responses can inject a loopback address alongside an external server address, tricking the client into connecting to an attacker-controlled registry over insecure HTTP.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
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Description
OSIDB Bzimport
2026-10-07 17:11:57 UTC
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