Asr 5000 Series SoftwareApplication · Cisco
CVE-2015-4244
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 boot implementation on Cisco ASR 5000 and 5500 devices with software 14.0 allows local users to execute arbitrary Linux commands by leveraging administrative privileges for storage of these commands in a Compact Flash (CF) file, aka Bug ID CSCuu75278.
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 confidenceThe boot implementation on Cisco ASR 5000 and 5500 devices running software 14.0 allows local users with administrative privileges to execute arbitrary Linux commands by embedding these commands in a Compact Flash (CF) file that the boot process reads and executes.
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
Asr 5000 Series SoftwareApplication
= 14.0CVSS 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
- Local
- Complexity
- Low
- Authentication
- None
- Confidentiality
- Complete
- Integrity
- Complete
- Availability
- Complete
AV:L/AC:L/Au:N/C:C/I:C/A:C
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 device modelVerify the hardware is Cisco ASR 5000 Series or ASR 5500 using 'show hardware' or 'show version' commandAffected if Device is Cisco ASR 5000 or ASR 5500 series
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Check software versionExecute 'show version' or 'show software' to confirm the installed software versionAffected if Software version is exactly 14.0 (version 14.0)
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Verify Compact Flash storage is presentCheck for Compact Flash storage availability using 'show storage' or 'show disk' commandAffected if CF storage is present and accessible to the system
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Inspect CF file integrityExamine all files on the Compact Flash for unexpected or newly created files, particularly any files that may contain shell scripts or binary data not originating from CiscoAffected if Unexpected files exist on the CF storage, especially scripts or executables
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Review administrative access logsCheck system logs and audit trails for any indication of unauthorized administrative access or suspicious boot-related activityAffected if Evidence of unauthorized administrative sessions or modifications to boot configuration
Environment is affected if running Cisco ASR 5000/5500 hardware with software version exactly 14.0 and having accessible Compact Flash storage that could be manipulated by a local administrator.
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 dataRestrict administrative access and physical access to the Compact Flash storage; apply vendor software patches when available.
Fix this in Asr 5000 Series Software
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-2015-4244 — 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-2015-4244 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