{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2020-11-19T14:59:31.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"}, {"tags": ["x_refsource_MISC"], "url": "https://support.sippysoft.com/support/discussions/topics/3000179616"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2020-28361", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html", "refsource": "MISC", "url": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"}, {"name": "https://support.sippysoft.com/support/discussions/topics/3000179616", "refsource": "MISC", "url": "https://support.sippysoft.com/support/discussions/topics/3000179616"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-04T16:33:59.139Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://support.sippysoft.com/support/discussions/topics/3000179616"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2020-28361", "datePublished": "2020-11-18T13:34:23.000Z", "dateReserved": "2020-11-09T00:00:00.000Z", "dateUpdated": "2024-08-04T16:33:59.139Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cve@mitre.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:kamailio:kamailio:*:*:*:*:*:*:*:*", "matchCriteriaId": "95B2FC08-D7E3-4464-9D9C-DD5187C9119A", "versionEndExcluding": "5.4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue."}, {"lang": "es", "value": "Kamailio versiones anteriores a 5.4.0, como es usado en Sip Express Router (SER) en Sippy Softswitch versiones 4.5 hasta 5.2 y otros productos, permite omitir un mecanismo de protecci\u00f3n de eliminaci\u00f3n de encabezado por medio de caracteres de espacio en blanco. Esto ocurre en la funci\u00f3n remove_hf en el m\u00f3dulo textops de Kamailio. El uso particular de remove_hf en el softswitch Sippy puede permitir a un atacante h\u00e1bil con una credencial v\u00e1lida en el sistema interrumpir los mecanismos internos de contabilidad de inicio/duraci\u00f3n de llamadas, lo que puede dar lugar a una p\u00e9rdida de ingresos"}], "id": "CVE-2020-28361", "lastModified": "2026-06-17T03:10:19.770", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "SINGLE", "availabilityImpact": "NONE", "baseScore": 5.5, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 8.0, "impactScore": 4.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 5.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 2.5, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2020-11-18T14:15:12.017", "references": [{"source": "cve@mitre.org", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"}, {"source": "cve@mitre.org", "tags": ["Permissions Required"], "url": "https://support.sippysoft.com/support/discussions/topics/3000179616"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Exploit", "Third Party Advisory", "VDB Entry"], "url": "https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Permissions Required"], "url": "https://support.sippysoft.com/support/discussions/topics/3000179616"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-444"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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