Linux Distros Unpatched Vulnerability : CVE-2026-114603

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

include('compat.inc');

if (description)
{
  script_id(371635);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/27");

  script_cve_id("CVE-2026-114603");

  script_name(english:"Linux Distros Unpatched Vulnerability : CVE-2026-114603");

  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.

  - OpenTelemetry Python provides the Python API and SDK for OpenTelemetry. Prior to 1.45.1, the
    opentelemetry-api function TraceState.from_header in opentelemetry/trace/span.py, reached through
    TraceContextTextMapPropagator.extract, parses inbound W3C tracestate headers with an unbounded optional-
    whitespace regular expression. A malformed header containing a long run of spaces or tabs without a
    following comma causes quadratic backtracking before the member-count limit is applied. Services using the
    default W3C Trace Context propagator can therefore spend excessive CPU time on one unauthenticated request
    when the HTTP server, parser, gateway, or custom carrier accepts a sufficiently large header. The
    processing can occupy a synchronous worker or delay unrelated requests on the same asynchronous event
    loop. The impact is limited to availability and does not expose or modify telemetry data or allow code
    execution. This issue is fixed in version 1.45.1. (CVE-2026-114603)

Note that Nessus relies on the presence of the package as reported by the vendor.");
  script_set_attribute(attribute:"see_also", value:"https://security-tracker.debian.org/tracker/CVE-2026-114603");
  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:L/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:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:U/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-114603");

  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:"2026/10/22");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/24");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:debian:debian_linux:14.0");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:debian:debian_linux:python-opentelemetry");
  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/Debian Linux-14");

  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/Debian/dpkg-l"))) audit(AUDIT_PACKAGE_LIST_MISSING);

include('linux_unpatched.inc');

var distro_constraints_array = {
  "Debian Linux-14": {
    "package_manager": "dpkg-l",
    "constraints": [
      {
        "release": "14",
        "pkgs": [
          {"reference": "python-opentelemetry-doc"},
          {"reference": "python3-opentelemetry-api"},
          {"reference": "python3-opentelemetry-configuration"},
          {"reference": "python3-opentelemetry-exporter-otlp"},
          {"reference": "python3-opentelemetry-exporter-otlp-proto-common"},
          {"reference": "python3-opentelemetry-exporter-otlp-proto-grpc"},
          {"reference": "python3-opentelemetry-exporter-otlp-proto-http"},
          {"reference": "python3-opentelemetry-exporter-prometheus"},
          {"reference": "python3-opentelemetry-exporter-zipkin-json"},
          {"reference": "python3-opentelemetry-exporter-zipkin-proto-http"},
          {"reference": "python3-opentelemetry-opentracing-shim"},
          {"reference": "python3-opentelemetry-propagator-b3"},
          {"reference": "python3-opentelemetry-propagator-jaeger"},
          {"reference": "python3-opentelemetry-proto"},
          {"reference": "python3-opentelemetry-proto-json"},
          {"reference": "python3-opentelemetry-sdk"},
          {"reference": "python3-opentelemetry-semantic-conventions"}
        ]
      }
    ]
  }
};

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 third_party_support = get_kb_item('Host/OS/extended-third-party');
if (!empty_or_null(third_party_support)) {
    var third_party_vendors = distro_constraints_values['third_party'];
    if (!empty_or_null(third_party_vendors)) {
        var vendor;
        foreach vendor (third_party_vendors) {
            if (vendor == third_party_support) exit(0, 'A third party management patch is available for this vulnerability from ' + vendor + '.\n');
        }
    }
}

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');
}