EulerOS Virtualization 2.11.1 : libxslt (EulerOS-SA-2026-3439)

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

include('compat.inc');

if (description)
{
  script_id(347198);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/09/18");

  script_cve_id(
    "CVE-2024-55549",
    "CVE-2025-7424",
    "CVE-2025-10911",
    "CVE-2025-11731",
    "CVE-2025-24855"
  );
  script_xref(name:"IAVA", value:"2025-A-0187");

  script_name(english:"EulerOS Virtualization 2.11.1 : libxslt (EulerOS-SA-2026-3439)");

  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 libxslt package installed, the EulerOS Virtualization installation on the remote host
is affected by the following vulnerabilities :

    xsltGetInheritedNsList in libxslt before 1.1.43 has a use-after-free issue related to exclusion of result
    prefixes.(CVE-2024-55549)

    numbers.c in libxslt before 1.1.43 has a use-after-free because, in nested XPath evaluations, an XPath
    context node can be modified but never restored. This is related to xsltNumberFormatGetValue,
    xsltEvalXPathPredicate, xsltEvalXPathStringNs, and xsltComputeSortResultInternal.(CVE-2025-24855)

    A flaw was found in the libxslt library. The same memory field, psvi, is used for both stylesheet and
    input data, which can lead to type confusion during XML transformations. This vulnerability allows an
    attacker to crash the application or corrupt memory. In some cases, it may lead to denial of service or
    unexpected behavior.(CVE-2025-7424)

    A use-after-free vulnerability was found in libxslt while parsing xsl nodes that may lead to the
    dereference of expired pointers and application crash.(CVE-2025-10911)

    A flaw was found in the exsltFuncResultComp() function of libxslt, which handles EXSLT func:result
    elements during stylesheet parsing. Due to improper type handling, the function may treat an XML document
    node as a regular XML element node, resulting in a type confusion. This can cause unexpected memory reads
    and potential crashes. While difficult to exploit, the flaw could lead to application instability or
    denial of service.(CVE-2025-11731)

Tenable has extracted the preceding description block directly from the EulerOS Virtualization libxslt 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-2026-3439
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?360f7819");
  script_set_attribute(attribute:"solution", value:
"Update the affected libxslt packages.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:POC/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:P/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-24855");

  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:"2025/03/11");
  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:libxslt");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:huawei:euleros:uvp:2.11.1");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_set_attribute(attribute:"stig_severity", value:"I");
  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 != "2.11.1") audit(AUDIT_OS_NOT, "EulerOS Virtualization 2.11.1");
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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "libxslt-1.1.34-6.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_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, "libxslt");
}