EulerOS 2.0 SP15 : sssd (EulerOS-SA-2026-2911)

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

include('compat.inc');

if (description)
{
  script_id(332870);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/06");

  script_cve_id("CVE-2026-6245");

  script_name(english:"EulerOS 2.0 SP15 : sssd (EulerOS-SA-2026-2911)");

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

    A flaw was found in the System Security Services Daemon (SSSD). The pam_passkey_child_read_data() function
    within the PAM passkey responder fails to properly handle raw bytes received from a pipe. Because the data
    is treated as a NUL-terminated C string without explicit termination, it results in an out-of-bounds read
    when processed by functions like snprintf(). A local attacker could potentially trigger this vulnerability
    by initiating a crafted passkey authentication request, causing the SSSD PAM responder to crash, resulting
    in a local Denial of Service (DoS).(CVE-2026-6245)

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

Note that Nessus has not tested for this issue 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-2026-2911
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?816be3c3");
  script_set_attribute(attribute:"solution", value:
"Update the affected sssd packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/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:L/AC:L/PR:L/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:"cvss_score_source", value:"CVE-2026-6245");

  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:"2026/04/15");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/06");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/06");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libipa_hbac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_autofs");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_certmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_nss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libsss_sudo");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-libipa_hbac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-libsss_nss_idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-sss");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-sss-murmur");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:python3-sssdconfig");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ad");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-client");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-common-pac");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-dbus");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-help");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ipa");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-kcm");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-krb5-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-ldap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-nfs-idmap");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-proxy");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-tools");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:sssd-winbind-idmap");
  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 SP15");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(15)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP15");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP15", "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$" && "aarch64" >!< cpu && "x86" >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, "EulerOS", cpu);
if ("x86_64" >!< cpu && cpu !~ "^i[3-6]86$" && "x86" >!< cpu) audit(AUDIT_ARCH_NOT, "i686 / x86_64", cpu);

var flag = 0;

var pkgs = [
  "libipa_hbac-2.9.4-11.h21510.12.eulerosv2r15",
  "libsss_autofs-2.9.4-11.h21510.12.eulerosv2r15",
  "libsss_certmap-2.9.4-11.h21510.12.eulerosv2r15",
  "libsss_idmap-2.9.4-11.h21510.12.eulerosv2r15",
  "libsss_nss_idmap-2.9.4-11.h21510.12.eulerosv2r15",
  "libsss_sudo-2.9.4-11.h21510.12.eulerosv2r15",
  "python3-libipa_hbac-2.9.4-11.h21510.12.eulerosv2r15",
  "python3-libsss_nss_idmap-2.9.4-11.h21510.12.eulerosv2r15",
  "python3-sss-2.9.4-11.h21510.12.eulerosv2r15",
  "python3-sss-murmur-2.9.4-11.h21510.12.eulerosv2r15",
  "python3-sssdconfig-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-ad-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-client-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-common-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-common-pac-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-dbus-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-help-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-ipa-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-kcm-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-krb5-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-krb5-common-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-ldap-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-nfs-idmap-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-proxy-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-tools-2.9.4-11.h21510.12.eulerosv2r15",
  "sssd-winbind-idmap-2.9.4-11.h21510.12.eulerosv2r15"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"15", 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, "sssd");
}