FKIE_CVE-2008-1897
Vulnerability from fkie_nvd - Published: 2008-04-23 16:05 - Updated: 2026-06-16 22:52
Severity
Summary
The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server's reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923.
References
Impacted products
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"source": "cve@mitre.org"
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "The IAX2 channel driver (chan_iax2) in Asterisk Open Source 1.0.x, 1.2.x before 1.2.28, and 1.4.x before 1.4.19.1; Business Edition A.x.x, B.x.x before B.2.5.2, and C.x.x before C.1.8.1; AsteriskNOW before 1.0.3; Appliance Developer Kit 0.x.x; and s800i before 1.1.0.3, when configured to allow unauthenticated calls, does not verify that an ACK response contains a call number matching the server\u0027s reply to a NEW message, which allows remote attackers to cause a denial of service (traffic amplification) via a spoofed ACK response that does not complete a 3-way handshake. NOTE: this issue exists because of an incomplete fix for CVE-2008-1923."
},
{
"lang": "es",
"value": "El driver del canal IAX2 (chan_iax2) en Asterisk Open Source 1.0.x, 1.2.x anteriores a 1.2.28 y 1.4.x anteriores a 1.4.19.1; Business Edition A.x.x, B.x.x anteriores a B.2.5.2 y C.x.x anteriores a C.1.8.1; AsteriskNOW anteriores a 1.0.3; Apliance Developer Kit 0.x.x y s800i anterior a la 1.1.0.3, cuando est\u00e1 configurado para permitir llamadas no autenticadas, no verifica que una respuesta ACK contenga un n\u00famero que coincida con el de respuesta del servidor a un NUEVO mensaje, que puede permitir a los atacantes provocar una denegaci\u00f3n de servicio (amplificaci\u00f3n del tr\u00e1fico) a trav\u00e9s de una respuesta ACK falseada, que no complete la negociaci\u00f3n de 3 pasos. NOTA: Este problema existe debido a una correci\u00f3n incompleto para CVE-2008-1923"
}
],
"id": "CVE-2008-1897",
"lastModified": "2026-06-16T22:52:42.703",
"metrics": {
"cvssMetricV2": [
{
"acInsufInfo": false,
"baseSeverity": "MEDIUM",
"cvssData": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 4.3,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:M/Au:N/C:N/I:N/A:P",
"version": "2.0"
},
"exploitabilityScore": 8.6,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"source": "nvd@nist.gov",
"type": "Primary",
"userInteractionRequired": false
}
]
},
"published": "2008-04-23T16:05:00.000",
"references": [
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},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://downloads.asterisk.org/pub/security/AST-2008-006.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://exchange.xforce.ibmcloud.com/vulnerabilities/41966"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/jcollie/asterisk/commit/60de4fbbdf3ede49f158e23a9e3b679f2e519c1e"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/jcollie/asterisk/commit/771b3d8749b34b6eea4e03a2e514380da9582f90"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/jcollie/asterisk/commit/a8b180875b037b8da26f6a3bcc8e5e98b8c904d2"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/kaoru6/asterisk/commit/1fe14f38dd43dc894d21f85762b51208ba5c8acb"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/lyx2014/Asterisk/commit/0670e43c30135044e25cca7f80e1833e2c128653"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/mojolingo/asterisk/commit/20ac3662f137dbf7f42d5295590069a7d3b1166b"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/pruiz/asterisk/commit/e0ef9bd22810c6969a7f222eec04798f19a7e2d6"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/silentindark/asterisk-1/commit/fe8b7f31db687f8b9992864b82c93d22833019c7"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/xrg/asterisk-xrg/commit/10da3dab24e8ca08cf2c983f8d0206e383535b5a"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://github.com/xrg/asterisk-xrg/commit/51714a24347dc57f9a208a4a8af84115ef407b83"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00581.html"
},
{
"source": "af854a3a-2127-422b-91ae-364da2661108",
"url": "https://www.redhat.com/archives/fedora-package-announce/2008-April/msg00600.html"
}
],
"sourceIdentifier": "cve@mitre.org",
"vulnStatus": "Modified",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-287"
}
],
"source": "nvd@nist.gov",
"type": "Primary"
}
]
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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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