FKIE_CVE-2011-2561
Vulnerability from fkie_nvd - Published: 2011-08-29 15:55 - Updated: 2026-06-16 23:31
Severity
Summary
The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990.
References
Impacted products
{
"affected": [
{
"affectedData": [
{
"product": "n/a",
"vendor": "n/a",
"versions": [
{
"status": "affected",
"version": "n/a"
}
]
}
],
"source": "psirt@cisco.com"
}
],
"configurations": [
{
"nodes": [
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},
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"matchCriteriaId": "D81D69D5-E669-4DBC-A76B-E9C30A239A2B",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.0\\(2\\):*:*:*:*:*:*:*",
"matchCriteriaId": "FCB47159-FA07-4317-B562-D7AB7C49E8F6",
"vulnerable": true
},
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"matchCriteriaId": "B591E75E-040C-4D26-AF13-A4F87E048579",
"vulnerable": true
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"matchCriteriaId": "F22B2CDE-DB49-402D-8BF2-B9458D907DDE",
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{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(2b\\):*:*:*:*:*:*:*",
"matchCriteriaId": "18986D7E-E1E6-46EB-A247-2A98224FC122",
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"matchCriteriaId": "BFAAC2E8-B548-4940-9492-DEAB574E7CF8",
"vulnerable": true
},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(3\\):*:*:*:*:*:*:*",
"matchCriteriaId": "46BDD926-7F96-46C5-AD9C-40B7D3C78340",
"vulnerable": true
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{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(3a\\):*:*:*:*:*:*:*",
"matchCriteriaId": "7BA63076-B8A1-4672-99F3-703F7838F3A1",
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"matchCriteriaId": "3EADE6FA-40F8-4BEB-ABDB-77D4C0E587BC",
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"matchCriteriaId": "3F84676C-75A5-48D2-889D-B48EC724336F",
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"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(3b\\):*:*:*:*:*:*:*",
"matchCriteriaId": "2EA15D48-A0DE-4091-8C78-666E98B488C4",
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{
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"matchCriteriaId": "3038823F-C32D-4C1B-8228-D14B35535297",
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},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(3b\\)su2:*:*:*:*:*:*:*",
"matchCriteriaId": "617E82C3-1CB1-46B2-BCFE-94BF9DBDD1D5",
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},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(5\\):*:*:*:*:*:*:*",
"matchCriteriaId": "2ECDCE1A-176D-46E0-9C39-19FAD7B57892",
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"matchCriteriaId": "C6856A2A-55F4-4785-BEC1-54295D7D9CD6",
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"matchCriteriaId": "2727998A-ED1F-4EFE-9952-7DA8486706D0",
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{
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"matchCriteriaId": "2CBA6140-CEF7-4990-9A1E-76F02607BA84",
"vulnerable": true
},
{
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"matchCriteriaId": "9DCF2F2A-DF52-4BD8-A56B-B4E91CD1D1E6",
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},
{
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"matchCriteriaId": "9F0A5B28-0211-4173-BD91-67BCA3267C95",
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},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:7.1\\(5b\\)su3:*:*:*:*:*:*:*",
"matchCriteriaId": "74323C2F-949A-4A97-8A1A-1D0A470B93BC",
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},
{
"criteria": "cpe:2.3:a:cisco:unified_communications_manager:8.0:*:*:*:*:*:*:*",
"matchCriteriaId": "248E4608-B870-4913-8048-3771685CBD77",
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}
],
"negate": false,
"operator": "OR"
}
]
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The SIP process in Cisco Unified Communications Manager (aka CUCM, formerly CallManager) 7.x before 7.1(5b)su4 and 8.x before 8.0(1) does not properly handle SDP data within a SIP call in certain situations related to use of the g729ar8 codec for a Media Termination Point (MTP), which allows remote attackers to cause a denial of service (service outage) via a crafted call, aka Bug ID CSCtc61990."
},
{
"lang": "es",
"value": "El proceso SIP en Cisco Unified Communications Manager (tambi\u00e9n conocido como CUCM o CallManager) v7.x antes de v7.1(5b)su4 y v8.x antes de v8.0(1), no maneja adecuadamente datos SDP entre una llamada SIP en ciertas situaciones relacionadas con el uso del codec g729ar8 para Media Termination Point (MTP), lo que permite a atacantes remotos provocar una denegaci\u00f3n de servicio (interrupci\u00f3n del servicio) a trav\u00e9s de una llamada modificada, tambi\u00e9n conocido como Bug ID CSCtc61990."
}
],
"id": "CVE-2011-2561",
"lastModified": "2026-06-16T23:31:34.987",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "HIGH",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 7.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2011-08-29T15:55:01.220",
"references": [
{
"source": "psirt@cisco.com",
"tags": [
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"tags": [
"Vendor Advisory"
],
"url": "http://www.cisco.com/en/US/products/products_security_advisory09186a0080b8f531.shtml"
}
],
"sourceIdentifier": "psirt@cisco.com",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-399"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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