Adaptive Security Appliance SoftwareOperating system · Cisco
CVE-2014-2154
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 · uneditedMemory leak in the SIP inspection engine in Cisco Adaptive Security Appliance (ASA) Software allows remote attackers to cause a denial of service (memory consumption and instability) via crafted SIP packets, aka Bug ID CSCuf67469.
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 confidenceA memory leak vulnerability exists in the SIP inspection engine of Cisco Adaptive Security Appliance (ASA) Software. Remote attackers can exploit this by sending specially crafted SIP packets, causing memory consumption to grow unbounded until the device becomes unstable or unresponsive, resulting in a denial of service condition.
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
Adaptive Security Appliance SoftwareOperating system
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
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Partial
AV:N/AC:L/Au:N/C:N/I:N/A:P
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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Check if SIP inspection is enabled on the ASARun the command 'show service-policy' or 'show run | include sip' to examine the current configuration for SIP inspection policy settings.Affected if SIP inspection (inspect SIP) is configured in a service policy applied to an interface.
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Identify interfaces with SIP inspection appliedRun 'show service-policy interface' to list all interfaces with active service policies, then examine each for SIP inspection configuration.Affected if Any interface shows a service policy containing 'inspect SIP'.
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Verify the ASA software versionRun the command 'show version' to display the installed Cisco ASA Software version.Affected if The device is running any version of Cisco ASA Software (all versions are affected per the CVE).
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Monitor current memory utilizationRun 'show memory' to display current memory allocation and usage statistics on the ASA.Affected if Memory usage is abnormally high or continuously increasing, which may indicate the leak is being exploited.
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Check for SIP traffic matching and inspection activityRun 'show service-policy inspect sip' to view SIP inspection statistics and counters.Affected if SIP inspection statistics show active traffic processing; combined with high memory usage, this suggests potential exploitation.
The environment is affected if SIP inspection is enabled on any ASA interface and the device is experiencing abnormal memory consumption, as the vulnerability requires the SIP inspection engine to be active.
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 the relevant Cisco security patch for ASA Software addressing CVE-2014-2154 (Bug ID CSCuf67469). If patching is not immediately feasible, consider rate-limiting or filtering SIP traffic at upstream devices to reduce exposure while planning the update.
Fix this in Adaptive Security Appliance Software
Scoped from the published advisory
- Consultation3.0 h
- Implementation4.0 h
- Testing3.0 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 $3,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-2154 — 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-2014-2154 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
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