Unified Communications ManagerApplication · Cisco
CVE-2014-0743
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 · uneditedThe Certificate Authority Proxy Function (CAPF) component in Cisco Unified Communications Manager (Unified CM) 10.0(1) and earlier allows remote attackers to bypass authentication and modify registered-device information via crafted data, aka Bug ID CSCum95468.
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 confidenceThe Certificate Authority Proxy Function (CAPF) in Cisco Unified Communications Manager versions 10.0(1) and earlier contains an authentication bypass vulnerability. Remote attackers can exploit this flaw using crafted data to bypass authentication mechanisms and modify registered-device information, potentially allowing unauthorized device registration or manipulation of the telephony environment.
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
Unified Communications ManagerApplication
<= 10.0\(1\)= 3.3\(5\)= 3.3\(5\)sr1= 3.3\(5\)sr2a= 4.1\(3\)= 4.1\(3\)sr1= 4.1\(3\)sr2= 4.1\(3\)sr3= 4.1\(3\)sr4= 4.2= 4.2.1= 4.2.2CVSS 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
- Partial
- Availability
- None
AV:N/AC:L/Au:N/C:N/I:P/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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Check Cisco Unified Communications Manager versionAccess the CUCM administration interface and navigate to About > Version, or use the CLI command 'show version' to identify the installed versionAffected if The installed version matches any of the following: 10.0(1) or earlier, 3.3(5), 3.3(5)sr1, 3.3(5)sr2a, 4.1(3), 4.1(3)sr1, 4.1(3)sr2, 4.1(3)sr3, 4.1(3)sr4, 4.2, 4.2.1, or 4.2.2
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Verify if CAPF service is enabledIn CUCM administration, navigate to System > Security > Certificate Authority Proxy Function (CAPF) and check the service status, or use the CLI command 'show process name capf'Affected if CAPF is enabled and running on an affected version of CUCM
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Review device registration logs for anomaliesExamine Cisco CallManager service logs and CAPF audit logs for unexpected device registration events, unauthorized IP phone additions, or modifications to existing device configurations occurring around the time of potential exploitationAffected if Unexpected device registrations or modifications are found that were not initiated by authorized administrators
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Check for unauthorized CAPF operationsReview CAPF-related logs for failed authentication attempts, malformed certificate requests, or operations performed without proper credentialsAffected if Logs show authentication bypass indicators such as successful operations with invalid credentials or unexpected CAPF operations from unauthorized sources
A system is affected if it runs a vulnerable CUCM version (10.0.1 or earlier, or any of the specific 3.x/4.x versions listed) with CAPF enabled and exhibits unauthorized device registration activity or anomalous CAPF operations in logs.
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 Unified Communications Manager to a version newer than 10.0(1) that contains the fix for Bug ID CSCum95468. If immediate patching is not feasible, restrict network access to the CAPF interface and monitor for unauthorized device registration changes.
Fix this in Unified Communications Manager
Scoped from the published advisory
- Consultation4.0 h
- Implementation12.0 h
- Testing8.0 h
- Review / QA4.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2014-0743 — 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-2014-0743 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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