SatelliteApplication · Redhat
CVE-2013-2056
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 Inter-Satellite Sync (ISS) operation in Red Hat Network (RHN) Satellite 5.3, 5.4, and 5.5 does not properly check client "authenticity," which allows remote attackers to obtain channel content by skipping the initial authentication call.
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 confidenceThe Inter-Satellite Sync (ISS) operation in RHN Satellite versions 5.3, 5.4, and 5.5 fails to properly validate client authenticity, allowing remote attackers to bypass the initial authentication handshake and retrieve channel content directly. This is an authentication bypass vulnerability in the synchronization protocol between satellite servers.
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
SatelliteApplication
= 5.3= 5.4= 5.5CVSS 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
- Authentication
- None
- Confidentiality
- Partial
- Integrity
- None
- Availability
- None
AV:N/AC:L/Au:N/C:P/I:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify installed RHN Satellite versionRun 'rpm -q rhn-satellite' or check /etc/redhat-release if available, or use the Satellite web UI under 'Admin > General' to view the installed versionAffected if Version is 5.3, 5.4, or 5.5 exactly (these are the only affected versions)
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Determine if Inter-Satellite Sync is enabledCheck the Satellite configuration files (typically under /etc/rhn or via the web UI at 'Admin > ISS') to see if ISS functionality is activatedAffected if ISS is explicitly enabled in the Satellite configuration
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Inspect ISS allowed satellite server listReview the ISS configuration to list all authorized satellite server hostnames or IP addresses permitted to syncAffected if The allowed satellite list includes any addresses outside your trusted internal network or contains entries that are not explicitly verified
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Verify network exposure of ISS serviceCheck if port 443 or the ISS service port is exposed to untrusted networks by reviewing firewall rules or network ACLsAffected if ISS port is accessible from networks beyond your controlled satellite infrastructure
User is affected if running RHN Satellite version 5.3, 5.4, or 5.5 with ISS enabled and configured to accept connections from untrusted or external satellite servers.
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 dataApply Red Hat-provided patches for this vulnerability and implement network-level controls to restrict ISS communication to only authorized satellite server IP addresses.
Fix this in Satellite
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-2056 — 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-2013-2056 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data