Linux Distros Unpatched Vulnerability : CVE-2026-34165

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

include('compat.inc');

if (description)
{
  script_id(304724);
  script_version("1.6");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/06/02");

  script_cve_id("CVE-2026-34165");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-34165");

  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.

  - go-git is an extensible git implementation library written in pure Go. From version 5.0.0 to before
    version 5.17.1, a vulnerability has been identified in which a maliciously crafted .idx file can cause
    asymmetric memory consumption, potentially exhausting available memory and resulting in a denial-of-
    service (DoS) condition. Exploitation requires write access to the local repository's .git directory, it
    order to create or alter existing .idx files. This issue has been patched in version 5.17.1.
    (CVE-2026-34165)

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-2026-34165");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-34165");
  script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/CVE-2026-34165");
  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:L/AC:M/Au:N/C:N/I:N/A:P");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:U/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:N/I:N/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-2026-34165");

  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:"2026/03/30");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/04/03");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:24.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:25.10");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:26.04:-:lts");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:centos:centos:8");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:12.0");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:13.0");
  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:canonical:ubuntu_linux:golang-github-go-git-go-git");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-azure-monitor");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-cloudwatch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-elasticsearch");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-graphite");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-influxdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-loki");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-mssql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-mysql");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-opentsdb");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-postgres");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-prometheus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-selinux");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:centos:centos:grafana-stackdriver");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:golang-github-go-git-go-git");
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  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:grafana-postgres");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:grafana-prometheus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:redhat:enterprise_linux:grafana-selinux");
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  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-8", "Host/OS/Debian Linux-12", "Host/OS/Debian Linux-13", "Host/OS/Red Hat Enterprise Linux-8", "Host/OS/Red Hat Enterprise Linux-9", "Host/OS/Ubuntu Linux-22.04", "Host/OS/Ubuntu Linux-24.04", "Host/OS/Ubuntu Linux-25.10", "Host/OS/Ubuntu Linux-26.04");

  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/Debian/dpkg-l")) && empty_or_null(get_one_kb_item("Host/RedHat/rpm-list"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-12": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "12",
        "pkgs": [
          {"reference": "go-git"},
          {"reference": "golang-github-go-git-go-git-dev"}
        ]
      }
    ]
  },
  "Debian Linux-13": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "13",
        "pkgs": [
          {"reference": "go-git"},
          {"reference": "golang-github-go-git-go-git-dev"}
        ]
      }
    ]
  },
  "Ubuntu Linux-22.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "22.04",
        "pkgs": [
          {"reference": "golang-github-go-git-go-git"}
        ]
      }
    ]
  },
  "Ubuntu Linux-24.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "24.04",
        "pkgs": [
          {"reference": "golang-github-go-git-go-git"}
        ]
      }
    ]
  },
  "Ubuntu Linux-25.10": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "25.10",
        "pkgs": [
          {"reference": "golang-github-go-git-go-git"}
        ]
      }
    ]
  },
  "Ubuntu Linux-26.04": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "26.04",
        "pkgs": [
          {"reference": "golang-github-go-git-go-git"}
        ]
      }
    ]
  },
  "CentOS Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "grafana"},
          {"reference": "grafana-azure-monitor"},
          {"reference": "grafana-cloudwatch"},
          {"reference": "grafana-elasticsearch"},
          {"reference": "grafana-graphite"},
          {"reference": "grafana-influxdb"},
          {"reference": "grafana-loki"},
          {"reference": "grafana-mssql"},
          {"reference": "grafana-mysql"},
          {"reference": "grafana-opentsdb"},
          {"reference": "grafana-postgres"},
          {"reference": "grafana-prometheus"},
          {"reference": "grafana-selinux"},
          {"reference": "grafana-stackdriver"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-8": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "8",
        "pkgs": [
          {"reference": "grafana"},
          {"reference": "grafana-azure-monitor"},
          {"reference": "grafana-cloudwatch"},
          {"reference": "grafana-elasticsearch"},
          {"reference": "grafana-graphite"},
          {"reference": "grafana-influxdb"},
          {"reference": "grafana-loki"},
          {"reference": "grafana-mssql"},
          {"reference": "grafana-mysql"},
          {"reference": "grafana-opentsdb"},
          {"reference": "grafana-postgres"},
          {"reference": "grafana-prometheus"},
          {"reference": "grafana-selinux"},
          {"reference": "grafana-stackdriver"}
        ]
      }
    ]
  },
  "Red Hat Enterprise Linux-9": {
    "package_manager": "rpm-list",
    "constraints": [
      {
        "release": "9",
        "pkgs": [
          {"reference": "grafana"},
          {"reference": "grafana-selinux"}
        ]
      }
    ]
  }
};

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_NOTE,
      extra      : report
  );
  exit(0);
}
else
{
  audit(AUDIT_HOST_NOT, 'affected');
}