Telepresence System SoftwareApplication · Cisco
CVE-2013-1246
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 · uneditedCisco TelePresence System Software does not properly handle inactive t-shell sessions, which allows remote authenticated users to cause a denial of service (memory consumption and service outage) by establishing multiple SSH connections, aka Bug ID CSCug77610.
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 confidenceCisco TelePresence System Software fails to properly handle inactive t-shell (telnet shell) sessions initiated over SSH connections. When authenticated users establish multiple SSH connections and leave them idle, the software does not release the associated memory resources, leading to progressive memory consumption that eventually causes a denial of service.
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
Telepresence System SoftwareApplication
all versionsCVSS 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
- Single
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:S/C:N/I:N/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 the system productLog into the device and run 'show version' or 'show system information' to confirm the device is running Cisco TelePresence System SoftwareAffected if The device is a Cisco TelePresence System running any version of the software
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Check for idle SSH sessionsUse 'show users' or 'show ssh sessions' command to list all active SSH connections and identify sessions that appear idle or have been connected for extended periods without activityAffected if Multiple SSH sessions are present and remain in an idle state for prolonged periods
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Monitor memory consumptionRun 'show memory' or 'show processes memory' periodically over time to observe if available memory is progressively decreasingAffected if Free memory steadily decreases over time, especially when idle SSH sessions are present
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Review session configurationCheck the SSH daemon configuration for session timeout settings using 'show running-config | include ssh' or similar command to see if session idle timeouts are definedAffected if No session idle timeout is configured, allowing sessions to remain open indefinitely
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Count accumulated t-shell processesUse 'show processes' or 'show system processes' to enumerate t-shell or telnet shell processes and compare count against active user sessionsAffected if The number of t-shell processes exceeds the number of actively used sessions, indicating leaked processes
A Cisco TelePresence System is affected if it has idle SSH/t-shell sessions that are not being terminated and memory usage is growing proportionally to session count.
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 dataImplement SSH connection limits and session idle timeouts on the TelePresence system to prevent accumulation of inactive sessions; monitor memory usage; apply Cisco patches when available.
Fix this in Telepresence System Software
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2013-1246 — 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-2013-1246 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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