Intrusion Prevention SystemApplication · Cisco
CVE-2015-0654
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 · uneditedRace condition in the TLS implementation in MainApp in the management interface in Cisco Intrusion Prevention System (IPS) Software before 7.3(3)E4 allows remote attackers to cause a denial of service (process hang) by establishing many HTTPS sessions, aka Bug ID CSCuq40652.
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 confidenceRace condition in the TLS implementation in Cisco IPS Software's MainApp management interface allows remote attackers to cause denial of service by establishing many HTTPS sessions, resulting in process hang. The vulnerability affects versions prior to 7.3(3)E4.
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
Intrusion Prevention SystemApplication
= 7.2\(1\)e4= 7.2\(2\)e4= 7.3\(2\)e4CVSS 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
- M
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:M/Au:N/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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Verify Cisco IPS Software is installedAccess the device CLI and run 'show version' or 'show module' to confirm Cisco IPS Software is running on the deviceAffected if The device does not run Cisco IPS Software, so this CVE does not apply
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Check the installed IPS software versionRun 'show version' or 'show ips version' in the device CLI to display the installed Cisco IPS Software version numberAffected if The installed version is 7.2(1)E4, 7.2(2)E4, or 7.3(2)E4, indicating it is a vulnerable version prior to the fix
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Confirm HTTPS management interface is enabledRun 'show management-interface' or 'show running-config | include management' to verify the MainApp management interface is configured with HTTPS accessAffected if HTTPS management interface is enabled and accessible, making the vulnerability exploitable
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Determine if management interface is network accessibleCheck if the management interface IP is reachable from untrusted networks by reviewing interface bindings and access lists with 'show management-interface' and 'show access-list'Affected if The HTTPS management interface is exposed to untrusted networks, allowing remote attackers to trigger the race condition
You are affected if Cisco IPS Software version 7.2(1)E4, 7.2(2)E4, or 7.3(2)E4 is running and the HTTPS management interface is network-accessible to untrusted attackers.
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 dataUpgrade Cisco IPS Software to version 7.3(3)E4 or later to remediate this vulnerability. If immediate patching is not feasible, consider restricting management interface access to trusted networks or implementing rate limiting on HTTPS connections as a temporary compensating control.
Fix this in Intrusion Prevention System
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2015-0654 — 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-2015-0654 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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