EulerOS Virtualization 2.11.0 : protobuf (EulerOS-SA-2026-3541)

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

include('compat.inc');

if (description)
{
  script_id(347219);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/18");

  script_cve_id("CVE-2025-4565", "CVE-2026-0994");

  script_name(english:"EulerOS Virtualization 2.11.0 : protobuf (EulerOS-SA-2026-3541)");

  script_set_attribute(attribute:"synopsis", value:
"The remote EulerOS Virtualization host is missing multiple security updates.");
  script_set_attribute(attribute:"description", value:
"According to the versions of the protobuf packages installed, the EulerOS Virtualization installation on the remote host
is affected by the following vulnerabilities :

    Any project that uses Protobuf Pure-Python backendto parse untrusted Protocol Buffers data containing an
    arbitrary number of recursive groups, recursive messages or a series of SGROUPtags can be corrupted by
    exceeding the Python recursion limit. This can result in a Denial of service by crashing the application
    with a RecursionError. We recommend upgrading to version =6.31.1 or beyond
    commit17838beda2943d08b8a9d4df5b68f5f04f26d901(CVE-2025-4565)

    A denial-of-service (DoS) vulnerability exists in google.protobuf.json_format.ParseDict() in Python, where
    the max_recursion_depth limit can be bypassed when parsing nested google.protobuf.Any messages.Due to
    missing recursion depth accounting inside the internal Any-handling logic, an attacker can supply deeply
    nested Any structures that bypass the intended recursion limit, eventually exhausting Python's recursion
    stack and causing a RecursionError.(CVE-2026-0994)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization protobuf security
advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  # https://developer.huaweicloud.com/ict/en/site-euleros/euleros/security-advisories/EulerOS-SA-2026-3541
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?19058b6f");
  script_set_attribute(attribute:"solution", value:
"Update the affected protobuf packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/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:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-0994");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/01/23");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/09/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/09/18");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:protobuf");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:protobuf-compiler");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:protobuf-devel");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-protobuf");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.11.0");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Huawei Local Security Checks");

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

  script_dependencies("ssh_get_info.nasl");
  script_require_keys("Host/local_checks_enabled", "Host/cpu", "Host/EulerOS/release", "Host/EulerOS/rpm-list", "Host/EulerOS/uvp_version");

  exit(0);
}

include("rpm.inc");

if (!get_kb_item("Host/local_checks_enabled")) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);

var _release = get_kb_item("Host/EulerOS/release");
if (isnull(_release) || _release !~ "^EulerOS") audit(AUDIT_OS_NOT, "EulerOS");
var uvp = get_kb_item("Host/EulerOS/uvp_version");
if (uvp != "2.11.0") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.11.0");
if (!get_kb_item("Host/EulerOS/rpm-list")) audit(AUDIT_PACKAGE_LIST_MISSING);

var cpu = get_kb_item("Host/cpu");
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "x86" >!< cpu) audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

var flag = 0;

var pkgs = [
  "protobuf-3.14.0-1.h7.eulerosv2r11",
  "protobuf-compiler-3.14.0-1.h7.eulerosv2r11",
  "protobuf-devel-3.14.0-1.h7.eulerosv2r11",
  "python3-protobuf-3.14.0-1.h7.eulerosv2r11"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_HOLE,
    extra      : rpm_report_get()
  );
  exit(0);
}
else
{
  var tested = pkg_tests_get();
  if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
  else audit(AUDIT_PACKAGE_NOT_INSTALLED, "protobuf");
}