Ironport Web Security ApplianceApplication · Cisco
CVE-2012-1316
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 IronPort Web Security Appliance does not check for certificate revocation which could lead to MITM attacks
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 Cisco IronPort Web Security Appliance fails to perform certificate revocation checks (CRL/OCSP) when validating SSL/TLS certificates. This allows the appliance to accept certificates that have been revoked or are compromised, enabling an attacker positioned on the network path to perform man-in-the-middle attacks by presenting a revoked or fraudulent certificate.
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
Ironport Web Security ApplianceApplication
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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- High
- Availability
- None
CVSS:3.1/AV:N/AC:H/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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Confirm the device is a Cisco IronPort Web Security ApplianceIdentify the appliance model and firmware version via the administrative interface or CLIAffected if The device is an IronPort Web Security Appliance running any version - all versions are affected per CVE-2012-1316
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Determine if SSL/TLS inspection is enabledCheck the web security appliance configuration for SSL/TLS inspection or HTTPS decryption settingsAffected if SSL/TLS inspection is enabled and revocation checking is not configured or is disabled - this is the vulnerable state
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Check CRL validation configurationInspect the SSL inspection settings for certificate revocation list (CRL) checking - look for options like 'Check CRL', 'Verify Certificate Revocation', or similarAffected if CRL checking is disabled, not configured, or set to 'ignore' within SSL inspection settings
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Check OCSP validation configurationInspect the SSL inspection settings for OCSP (Online Certificate Status Protocol) validation settingsAffected if OCSP validation is disabled, not configured, or set to 'ignore' within SSL inspection settings
If the IronPort Web Security Appliance has SSL/TLS inspection enabled but both CRL and OCSP revocation checks are disabled or not configured, the appliance is affected by CVE-2012-1316 and may accept revoked or fraudulent certificates.
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 dataEnable and configure certificate revocation list (CRL) checking and/or OCSP (Online Certificate Status Protocol) validation in the IronPort appliance's SSL inspection settings to ensure revoked certificates are rejected.
Fix this in Ironport Web Security Appliance
Scoped from the published advisory
- Consultation4.0 h
- Implementation3.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,448.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2012-1316 — 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-2012-1316 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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