Firesight System SoftwareApplication · Cisco
CVE-2016-1463
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 FireSIGHT System Software 5.3.0, 5.3.1, 5.4.0, 6.0, and 6.0.1 allows remote attackers to bypass Snort rules via crafted parameters in the header of an HTTP packet, aka Bug ID CSCuz20737.
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 confidenceThis vulnerability in Cisco FireSIGHT System Software allows remote attackers to bypass Snort intrusion detection rules by crafting specific parameters in HTTP packet headers. Attackers can potentially deliver malicious traffic that would normally be blocked by Snort rules, effectively evading the intrusion prevention system.
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
Firesight System SoftwareApplication
= 5.3.0= 5.3.1= 5.4.0= 6.0.0= 6.0.1CVSS 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
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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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Verify Cisco FireSIGHT System Software is presentIdentify if the system is running Cisco FireSIGHT System Software by checking system information through the management console, web interface, or CLIAffected if The system has Cisco FireSIGHT System Software installed
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Determine the installed versionLocate the installed version of Cisco FireSIGHT System Software - typically accessible via the management interface under System > About, or via CLI command such as 'show version'Affected if The installed version is exactly 5.3.0, 5.3.1, 5.4.0, 6.0.0, or 6.0.1
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Confirm Snort intrusion prevention is enabledVerify that Snort-based intrusion prevention is active and configured to inspect traffic - check through the FireSIGHT management interface under Policies > Intrusion or similarAffected if Snort intrusion prevention is actively enabled and inspecting network traffic
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Assess network exposureDetermine if the FireSIGHT management interface or monitored network segments are accessible from untrusted networks by reviewing firewall rules and access list configurationsAffected if The system management interface or the monitored network is directly accessible from untrusted networks
The environment is affected if the installed version exactly matches 5.3.0, 5.3.1, 5.4.0, 6.0.0, or 6.0.1 AND Snort intrusion prevention is enabled and the system is network-accessible to potential 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 FireSIGHT System Software to a version beyond 6.0.1 that includes the fix for this vulnerability. Verify that Snort rules are functioning correctly after the upgrade.
Fix this in Firesight System Software
Scoped from the published advisory
- Consultation2.0 h
- Implementation4.0 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 $3,808.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2016-1463 — 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-2016-1463 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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