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RedhatCVE-2023-34966

HistoryJul 20, 2023 - 3:15 p.m.

CVE-2023-34966

2023-07-2015:15:11

CWE-835

redhat

web.nvd.nist.gov

171

cve-2023-34966

samba

mdssvc

rpc

spotlight

infinite loop

vulnerability

denial of service

nvd

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

7.2

Confidence

High

EPSS

0.057

Percentile

93.4%

JSON

An infinite loop vulnerability was found in Samba’s mdssvc RPC service for Spotlight. When parsing Spotlight mdssvc RPC packets sent by the client, the core unmarshalling function sl_unpack_loop() did not validate a field in the network packet that contains the count of elements in an array-like structure. By passing 0 as the count value, the attacked function will run in an endless loop consuming 100% CPU. This flaw allows an attacker to issue a malformed RPC request, triggering an infinite loop, resulting in a denial of service condition.

Affected configurations

Nvd

Node

sambasambaRange<4.16.11

sambasambaRange4.17.0–4.17.10

sambasambaRange4.18.0–4.18.5

Node

fedoraprojectfedoraMatch37

fedoraprojectfedoraMatch38

Node

redhatenterprise_linuxMatch8.0

redhatenterprise_linuxMatch9.0

Node

debiandebian_linuxMatch11.0

debiandebian_linuxMatch12.0

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.18.6-1.el8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream",
      "cpe:/o:redhat:enterprise_linux:8::baseos",
      "cpe:/a:redhat:enterprise_linux:8::crb"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.18.6-1.el8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream",
      "cpe:/o:redhat:enterprise_linux:8::baseos",
      "cpe:/a:redhat:enterprise_linux:8::crb"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.15.5-15.el8_6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.6::appstream",
      "cpe:/o:redhat:rhel_eus:8.6::baseos",
      "cpe:/a:redhat:rhel_eus:8.6::crb",
      "cpe:/o:redhat:rhev_hypervisor:4.4::el8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.17.5-5.el8_8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::crb",
      "cpe:/o:redhat:rhel_eus:8.8::baseos",
      "cpe:/a:redhat:rhel_eus:8.8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.18.6-100.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream",
      "cpe:/a:redhat:enterprise_linux:9::crb",
      "cpe:/a:redhat:enterprise_linux:9::resilientstorage",
      "cpe:/o:redhat:enterprise_linux:9::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.18.6-100.el9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream",
      "cpe:/a:redhat:enterprise_linux:9::crb",
      "cpe:/a:redhat:enterprise_linux:9::resilientstorage",
      "cpe:/o:redhat:enterprise_linux:9::baseos"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.17.5-105.el9_2",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:9.2::crb",
      "cpe:/o:redhat:rhel_eus:9.2::baseos",
      "cpe:/a:redhat:rhel_eus:9.2::resilientstorage",
      "cpe:/a:redhat:rhel_eus:9.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Virtualization 4 for Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:4.15.5-15.el8_6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.6::appstream",
      "cpe:/o:redhat:rhel_eus:8.6::baseos",
      "cpe:/a:redhat:rhel_eus:8.6::crb",
      "cpe:/o:redhat:rhev_hypervisor:4.4::el8"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba4",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:6"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "unknown",
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Storage 3",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "samba",
    "defaultStatus": "affected",
    "cpes": [
      "cpe:/a:redhat:storage:3"
    ]
  }
]