CVE-2021-41034Network attack vector

Build compromise via unverified HTTP binary downloads

Published Sep 29, 2021 · Updated Aug 4, 2024

Improper message-integrity enforcement in Eclipse Che 6.x allows man-in-the-middle attackers to replace binaries during stack builds. Java 8 Alpine and CentOS, Android, and PHP stack Dockerfiles download Maven, Android SDK, Tomcat, or Zend packages over HTTP without signature verification. The attack requires interception of a Che build; deployed Che runtimes are not exposed by this flaw, but a replaced binary executes in the resulting stack.

CVSS severity8.1
High
EPSS probability0.40%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper message-integrity enforcement in Eclipse Che 6.x allows man-in-the-middle attackers to replace binaries during stack builds. Java 8 Alpine and CentOS, Android, and PHP stack Dockerfiles download Maven, Android SDK, Tomcat, or Zend packages over HTTP without signature verification. The attack requires interception of a Che build; deployed Che runtimes are not exposed by this flaw, but a replaced binary executes in the resulting stack.

The record

CVE
CVE-2021-41034
Published
Sep 29, 2021
Updated
Aug 4, 2024
Vendor
The Eclipse Foundation
Product
Eclipse Che
Classifications
CWE-924, T1557
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 29, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=6.0 <unspecified
  2. Affected versionversion=unspecified <7.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Eclipse Foundation · Eclipse Cheversion=6.0 <unspecified; version=unspecified <7.0

Published CVSS scores

8.1NIST NVDCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-924Improper Enforcement of Message Integrity During Transmission in a Communication Channel
T1557Adversary-in-the-Middle

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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