EulerOS 2.0 SP12 : glibc (EulerOS-SA-2026-1391)

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

include('compat.inc');

if (description)
{
  script_id(302375);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/16");

  script_cve_id("CVE-2025-15281", "CVE-2026-0861");

  script_name(english:"EulerOS 2.0 SP12 : glibc (EulerOS-SA-2026-1391)");

  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 glibc packages installed, the EulerOS installation on the remote host is affected by
the following vulnerabilities :

    Passing too large an alignment to the memalign suite of functions (memalign, posix_memalign,
    aligned_alloc) in the GNU C Library version 2.30 to 2.42 may result in an integer overflow, which could
    consequently result in a heap corruption.

    Note that the attacker must have control over both, the size as well as the alignment arguments of the
    memalign function to be able to exploit this.  The size parameter must be close enough to PTRDIFF_MAX so
    as to overflow size_t along with the large alignment argument.  This limits the malicious inputs for the
    alignment for memalign to the range [162+ 1, 163] and exactly 163 for posix_memalign and
    aligned_alloc.

    Typically the alignment argument passed to such functions is a known constrained quantity (e.g. page size,
    block size, struct sizes) and is not attacker controlled, because of which this may not be easily
    exploitable in practice.  An application bug could potentially result in the input alignment being too
    large, e.g. due to a different buffer overflow or integer overflow in the application or its dependent
    libraries, but that is again an uncommon usage pattern given typical sources of alignments.(CVE-2026-0861)

    Calling wordexp with WRDE_REUSE in conjunction with WRDE_APPEND in the GNU C Library version 2.0 to
    version 2.42 may cause the interface to return uninitialized memory in the we_wordv member, which on
    subsequent calls to wordfree may abort the process.(CVE-2025-15281)

Tenable has extracted the preceding description block directly from the EulerOS glibc 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-2026-1391
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?0262c421");
  script_set_attribute(attribute:"solution", value:
"Update the affected glibc packages.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:H/Au:N/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:N/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-2026-0861");

  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:"2026/01/14");
  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:glibc");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-all-langpacks");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-common");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-locale-archive");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:glibc-locale-source");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:libnsl");
  script_set_attribute(attribute:"cpe", value:"p-cpe:/a:huawei:euleros:nscd");
  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 SP12");

var sp = get_kb_item("Host/EulerOS/sp");
if (isnull(sp) || sp !~ "^(12)$") audit(AUDIT_OS_NOT, "EulerOS 2.0 SP12");

if (!empty_or_null(uvp)) audit(AUDIT_OS_NOT, "EulerOS 2.0 SP12", "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 ("aarch64" >!< cpu) audit(AUDIT_ARCH_NOT, "aarch64", cpu);

var flag = 0;

var pkgs = [
  "glibc-2.34-105.h58.eulerosv2r12",
  "glibc-all-langpacks-2.34-105.h58.eulerosv2r12",
  "glibc-common-2.34-105.h58.eulerosv2r12",
  "glibc-locale-archive-2.34-105.h58.eulerosv2r12",
  "glibc-locale-source-2.34-105.h58.eulerosv2r12",
  "libnsl-2.34-105.h58.eulerosv2r12",
  "nscd-2.34-105.h58.eulerosv2r12"
];

foreach (var pkg in pkgs)
  if (rpm_check(release:"EulerOS-2.0", sp:"12", 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, "glibc");
}