CVE-2021-41034
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe build of some language stacks of Eclipse Che version 6 includes pulling some binaries from an unsecured HTTP endpoint. As a consequence the builds of such stacks are vulnerable to MITM attacks that allow the replacement of the original binaries with arbitrary ones. The stacks involved are Java 8 (alpine and centos), Android and PHP. The vulnerability is not exploitable at runtime but only when building Che.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceEclipse Che version 6 uses unsecured HTTP endpoints to pull binaries during the build of certain language stacks (Java 8 alpine/centos, Android, PHP). This enables man-in-the-middle attackers to replace legitimate binaries with malicious ones during the build process, affecting the integrity of the resulting container images.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 6.0.0, < 7.0.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Identify installed Eclipse Che versionRun 'che version' or check the Che operator version deployed in the cluster. Also check /version endpoint or Che server pod annotations.Affected if Version is 6.x (6.0.0 through 6.x, prior to 7.0.0)
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Locate language stack build configurationsExamine Che workspace templates, Devfile definitions, or stack definition YAML/JSON files in the Che installation. Look in /che/workspace-templates or similar directories.Affected if Build configurations for Java 8 (alpine/centos), Android, or PHP stacks exist in the environment
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Inspect binary download URLs in stack definitionsOpen the identified stack build configuration files and search for 'http://' URLs pointing to binary download locations. Check Dockerfile or build scripts referenced by the stacks.Affected if Any download URLs use HTTP instead of HTTPS for binary artifacts
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Verify if checksum verification is configuredReview the build configurations for presence of SHA256, SHA1, or GPG signature verification steps for downloaded binaries. Look for checksum files or .asc signature files being used.Affected if No checksum or signature verification is performed on downloaded binaries before execution
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Check workspace pod creation for affected stacksAttempt to create a workspace using one of the affected stacks (Java 8 alpine, Java 8 centos, Android, PHP). Inspect the resulting pod logs or build scripts for HTTP download activity.Affected if Workspace creation involves downloading binaries from HTTP endpoints
You are affected if you run Eclipse Che version 6.x and have built or use any of the Java 8 (alpine/centos), Android, or PHP language stacks without verifying that HTTPS or checksum validation replaces the insecure HTTP endpoints.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor data7.0.0
Replace HTTP endpoints with HTTPS in build configurations, and/or implement checksum/GPG verification of downloaded binaries before use. Rebuild affected stacks using the secured endpoints.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,512.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-41034 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2021-41034 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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