Email EncryptionApplication · Cisco
CVE-2017-12322
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 · uneditedMultiple vulnerabilities in the web interface of the Cisco Registered Envelope Service (a cloud-based service) could allow an unauthenticated, remote attacker to conduct a cross-site scripting (XSS) attack or redirect a user of the affected service to an undesired web page. The vulnerabilities are due to insufficient validation of user-supplied input by the web-based management interface of the affected service. An attacker could exploit these vulnerabilities by persuading a user to click a malicious link or by sending an HTTP request that could cause the affected service to redirect the request to a specified malicious URL. A successful exploit could allow the attacker to execute arbitrary script code in the context of the web interface of the affected system or allow the attacker to access sensitive browser-based information on the affected system. These types of exploits could also be used in phishing attacks that send users to malicious websites without their knowledge. Cisco Bug IDs: CSCve77195, CSCve90978, CSCvf42310, CSCvf42703, CSCvf42723, CSCvf46169, CSCvf49999.
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 confidenceMultiple XSS and open redirect vulnerabilities exist in the web interface of Cisco Registered Envelope Service (CRES), a cloud-based email encryption service. The issues are caused by insufficient validation of user-supplied input in the web-based management interface. An unauthenticated remote attacker can exploit these by tricking users into clicking malicious links or sending crafted HTTP requests, enabling arbitrary script execution in the web interface context or redirecting users to malicious sites.
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
Email EncryptionApplication
= 5.3.0-038CVSS 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
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 CRES service versionContact Cisco support or check your service administration portal to determine the exact version of Cisco Registered Envelope Service (CRES) or Cisco Email Encryption that is deployed for your organization. This is typically available in the service dashboard or through Cisco account representatives.Affected if The service version is exactly 5.3.0-038
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Verify web interface accessibilityDetermine if your organization uses the CRES web interface (accessible via the envelope portal URL provided by Cisco). Check if users can access the web-based management interface for opening encrypted emails.Affected if The web interface is accessible and users can interact with it, which is required for the XSS and open redirect flaws to be exploitable
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Confirm patch status with CiscoReach out to your Cisco account team or support to verify whether the security updates for CVE-2017-12322 have been applied to your CRES instance. Ask specifically about the XSS and open redirect fixes.Affected if Cisco has not confirmed that patches have been applied to your CRES instance
Your organization is affected if the CRES service version is exactly 5.3.0-038 and Cisco has not confirmed that the XSS and open redirect security updates have been applied.
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 dataAs this is a cloud-based service, remediation requires Cisco to patch the vulnerabilities on their infrastructure. Organizations should verify with Cisco that their CRES instance has received the security updates and educate users about the risks of clicking unsolicited links.
Fix this in Email Encryption
Scoped from the published advisory
- Consultation2.0 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 $1,408.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-12322 — 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-2017-12322 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
- No weaponised exploit code, or anything meant to cause harm
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