Linux Distros Unpatched Vulnerability : CVE-2026-11611

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(319686);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/08");

  script_cve_id("CVE-2026-11611");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-11611");

  script_set_attribute(attribute:"synopsis", value:
"The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be
patched.");
  script_set_attribute(attribute:"description", value:
"The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied
patch available.

  - A flaw was found in 389 Directory Server. The Content Synchronization persistent search plugin allows
    unbounded memory growth when an authenticated client stops reading sync responses, enabling denial of
    service. Additional race conditions in plugin thread lifecycle can cause crashes during connection
    teardown or shutdown. (CVE-2026-11611)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://access.redhat.com/security/cve/cve-2026-11611");
  script_set_attribute(attribute:"solution", value:
"There is no known solution at this time.");
  script_set_attribute(attribute:"agent", value:"unix");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-11611");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_set_attribute(attribute:"vendor_unpatched", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/06/08");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/06/08");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:7");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:redhat:enterprise_linux:9");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base-bdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base-legacy-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:389-ds-base-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:cockpit-389-ds");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:python3-lib389");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base-bdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base-legacy-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base-libs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:389-ds-base-snmp");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:cockpit-389-ds");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:python3-lib389");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("ssh_get_info2.nasl", "set_linux_os_id.nasl");
  script_require_keys("Host/cpu", "Host/local_checks_enabled", "global_settings/vendor_unpatched", "Host/OS/identifier");
  script_require_ports("Host/OS/CentOS Linux-7", "Host/OS/CentOS Linux-8", "Host/OS/Red Hat Enterprise Linux-10", "Host/OS/Red Hat Enterprise Linux-7", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9");

  exit(0);
}

if (!get_kb_item("global_settings/vendor_unpatched")) exit(0, "Unpatched Vulnerabilities Detection not active.");
if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
if (empty_or_null(get_one_kb_item("Host/CentOS/rpm-list")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Red Hat Enterprise Linux-10": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "10",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-bdb"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"},
          {"reference": "python3-lib389"}
        ]
      }
    ]
  },
  "CentOS Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-7": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "7",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-legacy-tools"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"},
          {"reference": "cockpit-389-ds"},
          {"reference": "python3-lib389"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-legacy-tools"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"},
          {"reference": "cockpit-389-ds"},
          {"reference": "python3-lib389"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "389-ds-base"},
          {"reference": "389-ds-base-devel"},
          {"reference": "389-ds-base-libs"},
          {"reference": "389-ds-base-snmp"},
          {"reference": "python3-lib389"}
        ]
      }
    ]
  }
};

var distro_constraints_values = linux_unpatched::get_distro_constraints(distro_constraints_arr:distro_constraints_array);
if (empty_or_null(distro_constraints_values)) audit(AUDIT_HOST_NOT, 'affected');
var report = linux_unpatched::check_unpatched_constraints(distro_constraints_values:distro_constraints_values);

if (!empty_or_null(report))
{
  security_report_v4(
      port       : 0,
      severity   : SECURITY_WARNING,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}