CVE-2023-42669
Vulnerability from cvelistv5
Published
2023-11-06 06:57
Modified
2024-11-06 14:41
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
Samba: "rpcecho" development server allows denial of service via sleep() call on ad dc
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:6209Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:6744Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7371
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7408
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7464
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2023:7467
secalert@redhat.comhttps://access.redhat.com/security/cve/CVE-2023-42669Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2241884Issue Tracking
secalert@redhat.comhttps://bugzilla.samba.org/show_bug.cgi?id=15474Issue Tracking
secalert@redhat.comhttps://www.samba.org/samba/security/CVE-2023-42669.htmlVendor Advisory
Impacted products
Red HatRed Hat Enterprise Linux 8
Red HatRed Hat Enterprise Linux 8
Red HatRed Hat Enterprise Linux 8.6 Extended Update Support
Red HatRed Hat Enterprise Linux 8.8 Extended Update Support
Red HatRed Hat Enterprise Linux 9
Red HatRed Hat Enterprise Linux 9
Red HatRed Hat Enterprise Linux 9.0 Extended Update Support
Red HatRed Hat Enterprise Linux 9.2 Extended Update Support
Red HatRed Hat Virtualization 4 for Red Hat Enterprise Linux 8
Red HatRed Hat Enterprise Linux 6
Red HatRed Hat Enterprise Linux 6
Red HatRed Hat Enterprise Linux 7
Red HatRed Hat Storage 3
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Authenticated users or attackers can exploit this vulnerability to make calls to the \\\"rpcecho\\\" server, requesting it to block for a specified duration, effectively disrupting most services and leading to a complete denial of service on the AD DC. The DoS affects all other services as \\\"rpcecho\\\" runs in the main RPC task.\"},{\"lang\":\"es\",\"value\":\"Se encontr\u00f3 una vulnerabilidad en el servidor de desarrollo \\\"rpcecho\\\" de Samba, un servidor RPC que no es de Windows utilizado para probar los elementos de la pila DCE/RPC de Samba. Esta vulnerabilidad se debe a una funci\u00f3n RPC que puede bloquearse indefinidamente. El problema surge porque el servicio \\\"rpcecho\\\" opera con un solo trabajador en la tarea principal de RPC, lo que permite bloquear las llamadas al servidor \\\"rpcecho\\\" durante un tiempo espec\u00edfico, lo que provoca interrupciones en el servicio. Esta interrupci\u00f3n se desencadena mediante una llamada \\\"sleep()\\\" en la funci\u00f3n \\\"dcesrv_echo_TestSleep()\\\" bajo condiciones espec\u00edficas. Los usuarios autenticados o los atacantes pueden aprovechar esta vulnerabilidad para realizar llamadas al servidor \\\"rpcecho\\\", solicit\u00e1ndole que se bloquee durante un per\u00edodo espec\u00edfico, interrumpiendo efectivamente la mayor\u00eda de los servicios y provocando una denegaci\u00f3n completa de servicio en AD DC. La DoS afecta a todos los dem\u00e1s servicios ya que \\\"rpcecho\\\" se ejecuta en la tarea principal de RPC.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":6.5,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":2.8,\"impactScore\":3.6}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]},{\"source\":\"secalert@redhat.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-400\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.0.0\",\"versionEndExcluding\":\"4.17.12\",\"matchCriteriaId\":\"F1CC08E7-E96D-4475-ACB6-22CDF280913E\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.18.0\",\"versionEndExcluding\":\"4.18.8\",\"matchCriteriaId\":\"8A33312F-1523-4647-83DA-6DD6231906F9\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"4.19.0\",\"versionEndExcluding\":\"4.19.1\",\"matchCriteriaId\":\"DE496104-DDB5-4709-8026-C83E99B0C865\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:redhat:storage:3.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"379A5883-F6DF-41F5-9403-8D17F6605737\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"F4CFF558-3C47-480D-A2F0-BABF26042943\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"7F6FB57C-2BC7-487C-96DD-132683AEB35D\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"4DDA3E5A-8754-4C48-9A27-E2415F8A6000\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:9.0_s390x:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FB056B47-1F45-4CE4-81F6-872F66C24C29\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:9.0_s390x:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"0CC06C2A-64A5-4302-B754-A4DC0E12FE7C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0_ppc64le:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E07C1C58-0E5F-4B56-9B8D-5DE67DB00F79\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:9.0_ppc64le:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"62D3FD78-5B63-4A1B-B4EE-9B098844691E\"}]}]}],\"references\":[{\"url\":\"https://access.redhat.com/errata/RHSA-2023:6209\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2023:6744\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://access.redhat.com/errata/RHSA-2023:7371\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2023:7408\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2023:7464\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/errata/RHSA-2023:7467\",\"source\":\"secalert@redhat.com\"},{\"url\":\"https://access.redhat.com/security/cve/CVE-2023-42669\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://bugzilla.redhat.com/show_bug.cgi?id=2241884\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://bugzilla.samba.org/show_bug.cgi?id=15474\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Issue Tracking\"]},{\"url\":\"https://www.samba.org/samba/security/CVE-2023-42669.html\",\"source\":\"secalert@redhat.com\",\"tags\":[\"Vendor Advisory\"]}]}}"
  }
}


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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
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