Jboss Core Services HttpdWeb server / proxy · Redhat

CVE-2020-25680

MEDIUM · 5.4 CVSS v3.1 Published 2021-01-07
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
60/100
Remediation priority · Elevated
Remotely reachable Zero-click

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 · unedited
A flaw was found in JBCS httpd in version 2.4.37 SP3, where it uses a back-end worker SSL certificate with the keystore file's ID is 'unknown'. The validation of the certificate whether CN and hostname are matching stopped working and allow connecting to the back-end work. The highest threat from this vulnerability is to data integrity.

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 · moderate confidence

JBoss HTTP server 2.4.37 SP3 has a broken SSL certificate validation mechanism for back-end worker connections. The keystore file's ID is set to 'unknown', causing the CN and hostname matching validation to fail completely. This allows connections to back-end workers without proper certificate validation, threatening data integrity.

MitigationReplace or reconfigure the keystore file with the correct ID so that SSL certificate CN/hostname validation can function properly, or enforce proper SSL certificate chain validation for back-end worker connections.

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
Jboss Core Services HttpdWeb server / proxy
Affected:= 2.4.37

CVSS 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
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify JBoss HTTP server version
    Run 'rpm -q jboss-core-services-httpd' or check the installed package version for Red Hat JBoss Core Services HTTPd
    Affected if The installed version is exactly 2.4.37 (SP3)
  2. Locate keystore configuration for back-end worker SSL
    Find the configuration file that defines the keystore for SSL connections to back-end workers (commonly in server.xml or similar SSL connector configuration)
    Affected if The keystore configuration exists and SSL back-end worker connections are configured
  3. Inspect keystore ID attribute
    Open the keystore configuration file and locate the keystore ID or alias parameter - look for a field that identifies the keystore (such as 'keyAlias' or keystore ID in the SSL connector definition)
    Affected if The keystore ID is set to 'unknown' or a value that prevents proper certificate validation
  4. Verify SSL certificate validation behavior
    Attempt a test connection to a back-end worker using SSL and inspect whether certificate CN and hostname validation is actually performed or silently bypassed
    Affected if Connections succeed without proper certificate chain validation or hostname/CN matching checks

You are affected if you are running JBoss HTTP server version 2.4.37 with SSL back-end worker connections enabled and the keystore ID is set to 'unknown', causing certificate validation to fail.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Replace or reconfigure the keystore file with the correct ID so that SSL certificate CN/hostname validation can function properly, or enforce proper SSL certificate chain validation for back-end worker connections.

Fix this in Jboss Core Services Httpd Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2020-25680 in production — separate from our analysis above.

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What this is

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What belongs here
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