Unified CallmanagerApplication · Cisco
CVE-2008-1744
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) service in Cisco Unified Communications Manager (CUCM) 4.1 before 4.1(3)SR7, 4.2 before 4.2(3)SR4, and 4.3 before 4.3(2) allows remote attackers to cause a denial of service (service crash) via malformed network traffic, aka Bug ID CSCsk46770.
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 Certificate Authority Proxy Function (CAPF) service in Cisco Unified Communications Manager versions 4.1, 4.2, and 4.3 prior to specific SR/point releases is vulnerable to a denial of service condition. Remote attackers can send malformed network traffic to the CAPF service, causing it to crash and become unavailable.
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 CallmanagerApplication
= 4.1= 4.1_3_sr4= 4.1_3_sr5= 4.1_3_sr5b= 4.1_3_sr5c
Unified Communications ManagerApplication
= 4.2_3_sr2= 4.2_3_sr2b= 4.2_3_sr3= 4.3= 4.3_1_sr1= 5.1_1= 5.1_2= 5.1_2a= 5.1_2b= 5.1_3a= 6.0= 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
- Authentication
- None
- Confidentiality
- None
- Integrity
- None
- Availability
- Complete
AV:N/AC:L/Au:N/C:N/I:N/A:C
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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Identify the installed CUCM versionLog into the Cisco Unified Communications Manager Administration interface and navigate to System > Version, or use the CLI command 'show version' on the server. Record the exact version number displayed.Affected if The installed version matches one of the affected versions listed in the CVE (4.1, 4.1_3_sr4 through 4.1_3_sr5c, 4.2_3_sr2 through 4.2_3_sr3, 4.3, 4.3_1_sr1, 5.1_1 through 5.1_3a, 6.0, or 6.0_1).
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Verify the CAPF service is runningIn CUCM Administration, go to Serviceability > Service Activation and verify the Certificate Authority Proxy Function (CAPF) service is activated. Alternatively, use the CLI command 'show process list | include capf' to check if the CAPF process is active.Affected if The CAPF service is activated and running on the system.
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Confirm CAPF network exposureReview the CAPF service binding by checking the IP address configuration in System > Server and System > Phone Security Profile. Determine if the CAPF service listens on any interface accessible from untrusted networks.Affected if The CAPF service is bound to an IP address reachable from networks outside the trusted management VLAN.
A system is affected if it runs any of the listed vulnerable CUCM versions AND has the CAPF service enabled and exposed to untrusted networks.
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 version 4.1(3)SR7, 4.2(3)SR4, 4.3(2), or later to resolve the vulnerability. Prior to upgrade, consider network segmentation to limit exposure of the CAPF service to untrusted networks.
Fix this in Unified Callmanager
Scoped from the published advisory
- Consultation4.0 h
- Implementation8.0 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 $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2008-1744 — 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-2008-1744 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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