EulerOS 2.0 SP10 : python-ldap (EulerOS-SA-2026-1346)

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

include('compat.inc');

if (description)
{
  script_id(302450);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id("CVE-2025-61911", "CVE-2025-61912");

  script_name(english:"EulerOS 2.0 SP10 : python-ldap (EulerOS-SA-2026-1346)");

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

    python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to
    3.4.5, the sanitization method `ldap.filter.escape_filter_chars` can be tricked to skip escaping of
    special characters when a crafted `list` or `dict` is supplied as the `assertion_value` parameter, and the
    non-default `escape_mode=1` is configured. The method `ldap.filter.escape_filter_chars` supports 3
    different escaping modes. `escape_mode=0` (default) and `escape_mode=2` happen to raise exceptions when a
    `list` or `dict` object is supplied as the `assertion_value` parameter. However, `escape_mode=1` computes
    without performing adequate logic to ensure a fully escaped return value. If an application relies on the
    vulnerable method in the `python-ldap` library to escape untrusted user input, an attacker might be able
    to abuse the vulnerability to launch ldap injection attacks which could potentially disclose or manipulate
    ldap data meant to be inaccessible to them. Version 3.4.5 fixes the issue by adding a type check at the
    start of the `ldap.filter.escape_filter_chars` method to raise an exception when the supplied
    `assertion_value` parameter is not of type `str`.(CVE-2025-61911)

    python-ldap is a lightweight directory access protocol (LDAP) client API for Python. In versions prior to
    3.4.5, ldap.dn.escape_dn_chars() escapes \x00 incorrectly by emitting a backslash followed by a literal
    NUL byte instead of the RFC-4514 hex form \00. Any application that uses this helper to construct DNs from
    untrusted input can be made to consistently fail before a request is sent to the LDAP server (e.g., AD),
    resulting in a client-side denial of service. Version 3.4.5 contains a patch for the
    issue.(CVE-2025-61912)

Tenable has extracted the preceding description block directly from the EulerOS python-ldap 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-2026-1346
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?8e030fe4");
  script_set_attribute(attribute:"solution", value:
"Update the affected python-ldap packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_supplemental", value:"CVSS:4.0/U:Green");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:P");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-61911");
  script_set_attribute(attribute:"cvss4_score_source", value:"CVE-2025-61912");

  script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"true");

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/10/10");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/16");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/03/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python-ldap-help");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-ldap");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:2.0");
  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/sp");
  script_exclude_keys("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 (_release !~ "^EulerOS release 2\.0(\D|$)") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(10)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP10", "EulerOS UVP " + uvp);

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);

var flag = 0;

var pkgs = [
  "python-ldap-help-3.1.0-3.h9.eulerosv2r10",
  "python3-ldap-3.1.0-3.h9.eulerosv2r10"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"10", reference:pkg)) flag++;

if (flag)
{
  security_report_v4(
    port       : 0,
    severity   : SECURITY_WARNING,
    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, "python-ldap");
}